We judge based on:
- The player's overall ability (this being the most important factor)
- How the player will fit into his new line-up
- How the player will adapt to his new surroundings, and vice-versa
- The transfer fee payable, if any, and any other financial details known. (Transfer fees unconfirmed by either club or otherwise unknown are given as approximations and are marked in italics.)
With all of that explained, here is the sixth and final installment of this summer's list. Take a look to see where your favourite signing of the summer comes in our top 20.
| 1 Cesc FABREGAS | |||||||
 | From: Arsenal To: Barcelona Fee: €34m It may have been the most tedious of transfer sagas but there can be little doubting the impact that Fabregas’ move will have on both Barcelona and Arsenal. A tactical reshuffle seems likely at Camp Nou and the 24-year-old is the reason for it. With perfection having seemingly been reached by Pep Guardiola last season, it speaks volumes that he’s willing to fix what isn’t broken by adding the Spain international. | ||||||
| 2 Sergio AGUERO | |||||||
 | From: Atletico Madrid To: Manchester City Fee: €38m The former Atletico Madrid man had been earmarked as the replacement for the unsettled Carlos Tevez but 'El Kun' has the ability to far surpass the achievements of his compatriot at Eastlands. Strong, fast and deadly in front of goal, the explosive star looks set to take the Premier League by storm in 2011-12 and beyond. | ||||||
| 3 Samir NASRI | |||||||
 | From: Arsenal To: Manchester City Fee: €25m Having swiftly followed Cesc Fabregas out of the Emirates, Samir Nasri is a signifier of the power shift currently taking place in the Premier League by joining Roberto Mancini's men. Clearly believing that the Eastlands outfit have the ability to chase silverware, the Frenchman could prove pivotal to his new side's title aspirations. | ||||||
| 4 Alexis SANCHEZ | |||||||
 | From: Udinese To: Barcelona Fee: €26m Shortly after joining the European champions, the Chile international declared that he hopes to one day be as good as new team-mate Lionel Messi. Sanchez may have some way to go yet, but one thing is for certain, La Liga has itself yet another superstar in this explosive 22-year old. | ||||||
| 5 Arturo VIDAL | |||||||
 Read more on Vidal | From: Bayer Leverkusen To: Juventus Fee: €10.5m The former Colo Colo man arrives in Turin on the back of four superb years in the Bundesliga. Having personified consistency in Germany, the 24-year-old will be looking to prove himself as one of, if not the leading, defensive midfielder in Europe on joining Juventus. | ||||||
| 6 Radamel FALCAO | |||||||
 | From: Porto To: Atletico Madrid Fee: €40m In the two full seasons that Radamel Falcao spent at Porto, he scored 73 goals in 88 games and was pivotal in the side that won the treble under Andre Villas-Boas last campaign. Alongside Hulk, the former River Plate man was near unstoppable in front of goal and now he will be expected to replace Sergio Aguero in the Spanish capital. His calibre commanded a huge transfer fee but the Colombian certainly has the ability to justify it. | ||||||
| 7 Maarten STEKELENBURG | |||||||
 | From: Ajax To: Roma Fee: €6.3m The Italian side have secured a quite astonishing bargain. A World Cup finalist and undoubtedly one of the most consistent goalkeepers on the planet, the 28-year-old keeper will be up there with Serie A's best in 2011-12. If the Dutchman's national team predecessor, Edwin Van der Sar is anything to go by, we could be seeing the new Roma man in between the sticks for at least another decade. | ||||||
| 8 Ashley YOUNG | |||||||
 | From: Aston Villa To: Manchester United Fee: €19m With a handful of impressive fixtures now under his belt, the England international is already looking the archetypal Manchester United player. Not cheap by any means, the former Watford man is likely to move into the Premier League champions' first-team. The battle to maintain a place ahead of the likes of Nani will be an absorbing one. | ||||||
| 9 Juan MATA | |||||||
 | From: Valencia To: Chelsea Fee: €26m With 34 goals less in the 2010-11 season compared to the double-winning campaign of 2009-10, a lack of creativity amongst the Chelsea ranks was plain for all to see as Manchester United strolled towards the title. Juan Mata has the ability to change all that and got off to the perfect start with a strike against Norwich on his debut. | ||||||
| 10 Manuel NEUER | |||||||
 | From: Schalke To: Bayern Munich Fee: €18m Having solidified his position amongst the continent's finest goalkeepers at the Veltins Arena last season, Neuer moves to Bayern Munich in the form of his life. Dissenters may not have welcomed the 25-year-old with open arms but his ability alone could be enough to quieten the boo boys throughout the upcoming campaign. | ||||||
| 11 Nuri SAHIN | |||||||
 | From: Borussia Dortmund To: Real Madrid Fee: €10m Having been pivotal in Dortmund's league success last season, the 22-year-old Turkish international is likely to have been briefed with the same goal at the Bernabeu for 2011-12. A potential Barcelona beater and cost only €10m; the capital outfit have secured an unbelievable bargain. | ||||||
| 12 GERVINHO | |||||||
 | From: Lille To: Arsenal Fee: €13.5m There are still improvements required if Arsenal are to challenge for the Premier League title in 2011-12 but the addition of the incisive Ivorian could prove absolutely vital. With only one Gunners player scoring over 10 in the league last term, Gervinho could be the man to make the difference. | ||||||
| 13 Santi CAZORLA | |||||||
 | From: Villarreal To: Malaga Fee: €21m Arguably the stand-out signing for a Malaga outfit who haven't been shy in displaying their opulence this summer, Cazorla is the man to take the Andalusians to the next level. Creative and deadly accurate with his passing, the ex-Villarreal creator is a fantastic coup, as he teams up once more with former Yellow Submarine, Manuel Pellegrini. | ||||||
| 14 Samuel ETO'O | |||||||
 | From: Inter To: Anzhi Fee: €28m Only one Inter player mantained or bettered their form from the treble winning 2009-10 season during 2010-11, and that was the unstoppable Eto'o. The Cameroonian was a one-man team at times, scoring five goals in three cup final wins to finish the campaign with an incredible 37 strikes. His big-money move to Anzhi came as a huge shock, but it will come as no surprise when he starts banging in the goals for the Russians. | ||||||
| 15 Andre SCHURRLE | |||||||
 | From: Mainz To: Leverkusen Fee: €8m If the 2010-11 Bundesliga season was the year for uncovering unknown gems, then few defined the term as well as the tricky Mainz left-winger. With 15 goals and five assists in the league, as well as collecting his first cap for Germany in November, the future looks extremely bright for the 20-year-old. | ||||||
| 16 Phil JONES | |||||||
 | From: Blackburn To: Manchester United Fee: €25m Despite having arrived at Old Trafford as somewhat of an unknown quantity, the former Blackburn man has already shown his enormous potential with superb showings against the likes of Manchester City, Tottenham and Arsenal since moving to the Theatre of Dreams. Touted as a future England captain at the age of 19, Jones' immense promise could yet see him become one of the game's finest defenders. | ||||||
| 17 Theo JANSSEN | |||||||
 | From: Twente To: Ajax Fee: €3.5m With 13 goals from central midfield, Theo Janssen was by far and away the best player in last season's Eredivisie. The 30-year-old has left Twente to join title rivals Ajax in what could prove to be an incredibly decisive signing come the end of the 2011-12 season. | ||||||
| 18 Diego FORLAN | |||||||
 | From: Atletico Madrid To: Inter Fee: €5m Replacing Samuel Eto'o at Inter would be a near-impossible task for most strikers, yet if one player can succeed it is the 2010 World Cup Golden Ball winner. At 32, he is reaching the last straight of his career, but after scoring twice in the Copa America final to lead Uruguay to glory, Inter will be confident of a successful stint at San Siro. | ||||||
| 19 Javier PASTORE | |||||||
 | From: Palermo To: Paris Saint-Germain Fee: €42m After the capital outfit a huge amount of money, the pressure will be on 'El Flaco' to produce the goods at Parc des Princes and help European football's latest aristocrats to the Ligue 1 title. He certainly has the ability, and would be higher in the list if he had arrived in Paris for a less extortionate fee. | ||||||
| 20 Gokhan INLER | |||||||
 | From: Udinese To: Napoli Fee: €12m Despite being unveiled as a Napoli player whilst wearing a lion mask, it must be made clear that Inler is no joke. A pivotal cog in the Udinese machine last season, the Swiss star will enter the Champions League with his new side having aided his old outfit in reaching the very same destination in 2010-11. | ||||||