The 28-year-old Senegal international has signed a five-year deal at Stamford Bridge and is following in the footsteps of Cech by moving from capital of Brittany to Chelsea.
Cech won 13 major trophies in 11 seasons and Lampard, speaking to the club’s in-house media, said that the now technical adviser must be the benchmark for his latest summer recruit.
“Every goalkeeper has a journey and a story,” Lampard said. “Petr Cech turned up as a young lad from Ligue 1 in France and created his own story here through his own hard work and his qualities.
“That is the benchmark for any goalkeeper that comes to Chelsea, to try and emulate him [Cech].’Of course, it’s very tough because of what Petr managed to do in his career.
“Everyone has that opportunity, so it’s a challenge. Not just for Mendy but for every player in the squad.”
Cech was key in identifying Mendy as a replacement for Kepa Arrizabalaga, who continued his struggles in the opening two Premier League games.
Director Marina Granovskaia, who handled the negotiations, said: “As soon as Petr Cech and our technical team identified Edouard as the most suitable goalkeeper to complement our existing group, there was only one player we wanted to bring in.
“Edouard arrives following a season of real success with Rennes, he is ambitious for more, and we welcome him to our club.”