Rennes goalkeeper Edouard Mendy is expected in London for his medical this weekend after a breakthrough in negotiations yesterday.
Mendy did not take part in the training session on Friday morning after meeting with Rennes bosses to agree his exit.
And later in the day a deal was done with the French side finally accepting a fee which could rise to around £25m with add-ons for the keeper.
Mendy has already agreed personal terms with Chelsea and is set to become their eighth signing of this summer.
He will be following in the footsteps of club icon Petr Cech, who made the same transfer from Rennes to Stamford Bridge in 2004.
Cech is now Chelsea’s technical director and has been very key in getting the deal done, according to reports.
Chelsea, who will play against Brighton on Monday, failed to make any headway with a move for Atletico Madrid shot-stopper Jan Oblak.
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The blues also considered Ajax goalkeeper Andre Onana and Nick Pope at Burnley. But when Lille quoted them £32m for Mike Maignon, they turned their attention to Mendy.
Edouard Mendy queued at a job centre five years ago after seeing his contract with a French lower league side Cherbourg terminated.
But he is now making the move to Chelsea as competition for Kepa Arrizabalaga, who was signed for a whooping £71m in 2018.