The 33-year-old had been the subject of heavy praise since moving to Arsenal, however, while Arsene Wenger has also been lauded for signing the shot stopper.
But his league debut for the Gunners against West Ham didn't quite go to plan - with Ferdinand pointing out his indecision on Twitter...
For Peter Cech's sake #afc need to pull this back....everyone's signing of the season coming with some indecision...— Rio Ferdinand (@rioferdy5) August 9, 2015
Meanwhile, Arsenal legend Ian Wright shared a similar view on the veteran goalkeeper, admitting he 'had one' against West Ham.
"Gotta be said. So far Petr's had one. ..." http://t.co/d9RKosM2FA— Ian Wright (@IanWright0) August 9, 2015
However, Wright was also unhappy with another Gunners star in midfielder Francis Coquelin.
Just like Cech, Coquelin has received plenty of plaudits since growing into the holding role at Arsenal. Against West Ham, though, his passing was wasteful - something Wright pointed out on social media:
"Coquelin as got Ozil and Cazorla to give the ball to and he's still trying to make passes ..." http://t.co/d9RKosM2FA— Ian Wright (@IanWright0) August 9, 2015
Arsenal's next Premier League clash sees them travel to Crystal Palace, who could provide a very tough test for the north London side indeed based on their West Ham loss.