Parlour thinks Cech is as good as the likes of Jens Lehmann and David Seaman.
Parlour has suggested that he could be as important as the shot-stoppers from successful teams of the recent past - such as David Seaman and Jens Lehmann.
In an event hosted by the Daily Telegraph, Parlour said: "I played in Arsenal teams with great goalkeepers, with David Seaman and then Jens Lehmann, who was brilliant when he came in. I think Petr Cech will be similarly superb – what a signing.
"In goalkeeping terms he is still a young man, at 33. You look at Edwin Van der Sar, who signed for Manchester United in his mid 30s, and what an impact he had. With Cech in goals I thought Arsenal’s back four looked a lot more solid in the Community Shield. He has that experience of playing in big games, is commanding."
The goalkeeping situation prior to this season has been a bit of a problem for the Gunners - ever since the departure of Lehmann. More often than not, Arsene Wenger would end up changing his preferred option at some stage in the subsequent seasons.
In Cech, they have signed a proven winner who knows what it takes to land the big prizes, and that kind of experience in the dressing room could prove to be invaluable. And, as Parlour points out, there are several years for him at the top level yet.
Parlour does touch on an interesting point with regards to the defensive solidity of Arsenal during the Community Shield win over Chelsea. Though the Blues had the odd clear cut chance, there wasn't really a sense of the Gunners being in trouble at the back. Whether that's solely down to Cech is hard to tell, but if they come up with similar performances and results throughout the season, it will be difficult to argue against their new keeper being a big part of their success.