Chelsea have made an improved bid of €20 million (£18m/$24m) for Rennes goalkeeper Edouard Mendy, Goal can confirm.
With the future of current No.1 Kepa Arrizabalaga in doubt, the Blues have identified Mendy as an ideal option to provide competition for the Spaniard.
The Sun reported earlier in the week that Rennes turned down Chelsea's offer of €17m (£15m/$20m) for Mendy, and Frank Lampard's side have now returned with an improved bid.
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The Blues made Kepa the most expensive goalkeeper ever in 2018, paying £72 million ($93m) to bring him to Stamford Bridge from Athletic.