Arsene Wenger's men, though, are almost uniquely placed to approach such a daunting challenge, having tasted victory against the Bavarians previously and possessed of the conviction to do so again – the north Londoners are one of just three sides (including fellow Premier League outfit Manchester City) to win at the Allianz Arena since November 2011.
That last meeting, a 2-0 victory in Munich, has retrospectively been hailed as a turning point for Arsenal, transforming the club from a top-four lurker into a bona fide title challenger. The Gunners were knocked out only on away goals, putting up more of a fight than the champions of Italy and Spain, Juventus and Barcelona, who were, together, beaten 11-0 on aggregate by the Bayern juggernaut.
Admittedly, Arsenal has not started 2014 in as fine fashion as it finished the previous year. The team is still in the habit of winning, but ugly – a labored efficiency that's seen Wenger's men do just enough and little more – while a combination of slow starts, an Anfield massacring and injuries have chipped away at some of the confidence that had previously been a hallmark of the club's performances.
|PEP'S POSSESSION PANZER
|BAYERN'S SEASON SO FAR
WINS / LOSSES
BUNDESLIGA POINTS PER GAME
SHOTS ON TARGET PER GAME
SHORT PASSES PER GAME
The speed of possession is quicker – one-touch tiki-taka-inspired ball circulation – and the Bavarians create enough triangles to make even Pythagoras purr. The changes have been subtle, but significant.
“I believe we are now even more flexible, have even more control and are harder to figure out,” says Philipp Lahm of Guardiola's nips and tucks, a statement that will induce even more unsettled nights for Wenger and his men.
The conversion and redeployment of Lahm from right back to central midfielder has been the most prominent change, with the club captain performing a role not dissimilar to how both Guardiola himself played and Sergio Busquet's role under the Spaniard at Barcelona. Lahm is the orchestrator, the first outlet for the defense, the glue that holds the side together.
The 30-year-old, described by his manager as “probably the most intelligent player” he has ever trained, has averaged 81.4 passes per game this season, at 92 percent accuracy – the most of any Bayern player, and the fourth most in Europe's top five leagues.
Lahm has unquestionably been a revelation, but, earlier this month, Nurnberg gave perhaps the greatest demonstration that Bayern, and its transformed skipper, can be rattled – even if the plucky underdog ended up on the wrong side of a 2-0 score line.
In a barnstorming opening 15 minutes the club pressed aggressively, fighting for possession high up the pitch (winning three of five tackles in the opposition half in a blistering opening salvo). The team managed four shots on goal, as many as it would record throughout the rest of the match, with Hiroshi Kiyotake smashing the crossbar.
|“It seems that Bayern are even stronger this year in possession, defensively and how they cope with situations”
- Per Mertesacker
Lahm, usually so influential, was put under enormous pressure in those opening exchanges and, surrounded by Nurnberg players, successfully completed just 13 of 18 passes up until a second goal in the 49th minute killed off the contest and Gertjan Verbeek's men ran out of steam.
Diminutive and slight, Lahm was almost bullied in the first half at the Grundig-Stadion – a far cry from the solid, powerful, irrepressible pivot of Javi Martinez and Bastian Schweinsteiger that has been done away with under Guardiola's watch.
Disrupting Lahm and stopping the metronomic control of possession that flows through him will be key to Arsenal's hopes of success. For much of the first-leg clash at the Emirates last year, Arsenal stood off Bayern, and the English club cannot afford to make that mistake again.
“We respected them too much in the first leg then, so it was too easy for them,” noted Per Mertesacker.In fact, in the first 45 minutes the club attempted just one tackle in the opposition half, but would win nine of 13 in the following 135 minutes of action - and it paid dividends as Arsenal fought back in the tie.
The energetic Aaron Ramsey would have been perfectly suited for man-marking Lahm, but, in both his absence and with the tenacious Jack Wilshere needed deeper while Mikel Arteta is suspended, Wenger may look to the experience of Tomas Rosicky. The Czech's temperament and big-game composure have rarely let Arsenal down in the past, while he is snappy and purposeful in transition.
|HOW THE TEAMS COULD LINE UP
|Bayern's high line and smothering possession will leave space behind the attack-minded Alaba, while Arsenal must cut out the supply to and from Lahm
Now Rafinha holds down the right-back berth, but, having found a teammate with just 3 of 17 crosses in the Champions League, he is not a player Arsenal should be concerned about ceding possession and time to.
The marauding David Alaba's relentless surges forward, meanwhile, will be seen as another possible weak spot. This was a vulnerability Wenger picked up on late in the first-leg contest, switching Theo Walcott to the wing after initially looking to utilize his pace against the sluggish Daniel van Buyten. At the Allianz, the England international duly burst into space down the right to set up Olivier Giroud's opener.
Just because Walcott is sidelined does not mean Arsenal cannot exploit the space behind Alaba, which can cause even more problems under Guardiola. Previously, one of Schweinsteiger or Martinez would have fallen back to cover the Austrian fullback, now Dante must pull out wide instead.
The center back can be cumbersome when isolated in such a fashion – and has conceded significantly more fouls (43 percent more) than any other member of the back line – while it also means that Lahm and his short frame must drop back to cover for the Brazilian, creating an obvious mismatch against the towering Giroud should a cross be whipped into the box.
Speedster Alex Oxlade-Chamberlain is the obvious, like-for-like replacement for Walcott in such a scheme, though Mesut Ozil's ability to exploit space could be more devastating. The German, whose summer arrival further alters the dynamic of the rematch, would satisfy Wenger's natural inclination to field a playmaker on the flank who can tuck in and add a body in midfield.
But Ozil is also competent out wide and punishing on the counterattack, far more so than Santi Cazorla, who never tested Alaba at the Emirates, while Wenger may not trust Ozil to play in his usual No.10 role and harass Lahm following a string of labored displays. Oxlade-Chamberlain's match-winning FA Cup outing, in which he savaged Aly Cissokho, could earn him the nod though.
Regardless of the personnel picked, the key will be to remain brave and stay high up the field when Alaba advances – which should be less risky with Franck Ribery unavailable to wreak havoc ahead of him. The 21-year-old has often been the sole presence down the left flank in the Frenchman's absence, as Mario Gotze, Arjen Robben et all drift infield and interchange positions.
Bayern, then, is an even more fearsome proposition than last season. But so is Arsenal. The Gunners must look to shut down Lahm's supply, press high, prey on the space left by Alaba, show more composure in front of goal than Nurnberg and ensure the club's usually reliable defense does not implode as it did at Anfield. Lahm's change of position may have reaped reward for Bayern, but on this occasion it could also be the tema's undoing.
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