Former Arsenal goalkeeper Jens Lehmann says Petr Cech could need weeks, if not months, to settle down at his new club.
The 33-year-old became Arsenal's first summer signing after joining from rivals Chelsea for £10m with former England goalkeeper Peter Shilton believing that he could struggle if not properly assisted by the Arsenal defence.
And Lehmann, who spent five years at Arsenal, agrees that the Czech international could struggle in his first few months at the Emirates.
"It's not easy to suddenly go from Chelsea, where he has spent almost his whole career winning many trophies, to the other side of the capital with a rival," Lehmann told The Sun.
"Before you can have it in your heart to win titles again, you have to get rid of the love you had before.
"At Chelsea, for Petr, it was his passion and he showed great commitment. But, as a professional, he needs to get over it and needs to know Arsenal want him to win things again for them.
"Yet, let me tell you, that is not an easy thing to get over psychologically. It can take a few weeks, even a few months.
"With someone in there like Petr, with Per Mertesacker now as captain, they can re-establish this winning attitude and mentality."
