Cech told the club's website: "It's quite unique he comes from the same club as I did, but it doesn't really have anything to do with it.
"I've played the same league, I've been there, I know how good the league is. Of course years have gone by, but generally I believe goalkeepers coming from the French league are ready to play in the Premier League. In France the players are always physically well prepared, similar to the Premier League.
"The style of football Rennes played last year, a lot was with the goalkeeper, and trying to play high and press. It's similar to here where he will have a high line and people pressing high, and you need a goalkeeper who can play high and anticipate on balls behind and in the area. He will be a great addition to our goalkeeping department."