Chelsea have reached an agreement with Rennes to sign Senegal goalkeeper Edouard Mendy for a fee of £26 million. 

The 28-year-old had been allowed to undergo part of his medical a week ago after believing a deal was in place only to be called back when they failed to agree on a final fee. 

The deal is understood to be £22m plus add-ons with Mendy signing a five year contract. 

Mendy said his farewells to teammates on Friday after playing 34 games for the club. 

Chelsea boss Frank Lampard has wanted a new goalkeeper to usurp much-maligned Kepa Arrizabalaga as his No 1. 

Mendy is set to become the seventh signing in an extraordinary summer of spending for Chelsea, which is set to top £250million.  The Blues have signed Thiago Silva and Malang Sarr on free transfers and paid big fees to land Ben Chilwell, Kai Havertz, Timo Werner and Hakim Ziyech.

Mendy excelled after joining Rennes from Reims last summer, helping them qualify for the Champions League. The Senegal international will compete with Arrizabalaga for a starting place, though Lampard also has the experienced Willy Caballero.