Arsene Wenger admits that he signed Lukas Podolski to be a centre-forward for Arsenal, only to find out that he wasn't able to play in that position.
The French manager felt that Podolski could have been the answer to their striking problems when he signed him from FC Koln back in 2012, but he admits that he has had to revise his opinion.
In an interview with the Guardian, previewing a new book in the famous Invincibles side of 2003/04 season, he said: "I bought Lukas Podolski to be a centre forward or a wide player but after a while I thought he is only a wide player, not a centre forward. He can play behind the striker but not completely at the top. Sometimes you have to revise your judgment."
Podolski's future has been speculated about a lot recently and this frank admission will do little to remove rumours that he is set to leave the Emirates.
The 29-year-old has struggled to hold down a permanent spot in the first-team and Arsenal's wealth of options in attacking positions means that he is a long way down the pecking order.
It is a transfer which has never really worked out for the club, because of Podolski's lack of versatility, but Wenger has revealed the success he had with changing others positions when they arrived in North-London.
"Emmanuel Petit was a centre-back and he played midfield for us," he explained. "I had big fights with Lauren, who came many times to convince me he is not a right-back. I said, “Look, trust me, you are a right-back.” He said, “No, I am not a right-back. I am a right midfielder, and I can even play central midfield.” I said, “But you can make a magnificent right-back.” After a while he accepted it."
Thierry Henry is another famous example of a player who Wenger converted from a left-winger to a striker, but Podolski's failure to adapt looks set to cost him his place.
The World Cup winner has been linked with a move back to his homeland in January and that could be a good option for all parties.
If Podolski is to show he still has a future at Arsenal he will need to improve soon, and his first chance to make Wenger have a re-think could come against Hull City this weekend, if he is chosen to start.