Manchester United legend Gary Neville believes Unai Emery needs near three seasons to rebuild the Arsenal squad.
Despite the new faces in north London, Neville believes it will take Emery a few years before he's truly happy with the Arsenal team at his disposal.
Before defeat to Manchester City on Sunday, Neville told Sky Sports: At PSG it was difficult with all the egos, but he has a chance now like he did at Sevilla and Valencia to mould this squad into something that he likes.
"And I do think we will see a better team, but I do think it will take three or four transfer windows for him to have the full impact.
"I think he's finding out about his players.
"He's still in the exploration phase I'd imagine, and there is no better time to find out in terms of the first two games he's got at the start of the season."