As many coaches and football pundits call it 'silly season', the transfer season will always come up with shocks.
While several surprising moves have been made, Goal takes a look at one of the most recently completed transfers.
It is not a bad signing based on the keeper's quality, but the question on everyone's mind is whether or not he will make it at Sundowns?
The Bafana Bafana keeper launched his PSL career at Amakhosi back in 2013 until 2016 and was set to compete against the likes of Brilliant Khuzwayo and Itumeleng Khune.
He featured in 20 matches in all competitions for the Soweto giants as he struggled in his fight for the No.1 jersey in the starting XI.
Failing to challenge the top two keepers at Naturena, the 26-year-old opted to jump ship and followed the likes of Reneilwe Letsholonyane and Morgan Gould as he joined Stuart Baxter at Amatsantsantsa A Pitori.
However, he again failed to cement a permanent starting berth in Tshwane as he only played in 30 games in all competitions in his two-year stay with the reigning MTN8 Cup champions.
The Johannesburg-born keeper competed against Ronwen Williams and despite the SuperSport No.1 having suffered a long term injury in the past season, Pieterse could not capitalise on that opportunity.
Just after the end of the past season, the 2016 Caf Confederation Cup finalists announced that the keeper had asked to be released from his contract as he went in search of regular game time elsewhere.
In a shocking move, the Brazilians coach Pitso Mosimane allowed him to train with his squad which comprises of top quality keepers.
The reigning league champions have Denis Onyango, Kennedy Mweene and Thela Ngobeni following Razak Brimah's departure, but have all struggled for game time.
Ngobeni has been shipped out to Free State Stars on two occasions whilst Mweene was used sparingly in cup competitions and when Onyango was injured or suspended.
To many, the arrival of Pieterse who signed on Friday comes as a shocker because it is no secret that Onyango is Mosimane's preferred candidate to stand between the sticks.
If Pieterse's decision was influenced by his lack of game time then it looks likely that the shot-stopper will seek a move away from the 2016 Caf Champions League winners very soon, because game time could be a distant dream.
Nonetheless, with Ngobeni rumoured to be heading to Maritzburg United on loan, Pieterse will definitely have to fight in order to push Mweene down the pecking order and deputise for Onyango.
However, based on Pieterse's history, it shows that he is a journeyman and this move is not necessarily the best for the ambitious keeper.
Perhaps he should've opted for a team where he could get more game time rather than going to a club where competition is already stiff in the goalkeeping department.
For now, it looks like a miscalculated move for the former Bidvest Wits junior keeper, but time will only tell as the 2018/19 PSL season gets underway this weekend.