Rennes president Nicolas Holveck said goalkeeper Edouard Mendy has told the club his desire to join Chelsea amid talks between the two clubs.
The 28-year-old helped Rennes finish third in Ligue 1 and secure a Champions League spot for Rennes last season, but with Chelsea now knocking the door, Mendy could play in the European competition this season with the Blues instead.
The French club have been in negotiations with Chelsea over the Senegal international, as confirmed by the club president Holveck, although he also said the two clubs have yet to reach an agreement.
Speaking in a press conference, he told the media (via Footmercato): “Yes there are discussions that have been initiated with Chelsea, no agreement for the moment — far from it.
“We know the value of the player and the man, I am unable to tell you what will happen. For a transfer to take place, the agreement between the three parties is necessary.
“I can understand Edouard’s desire, he told us about his desires, it’s part of the transfer window.”
The former Monaco technical director also empashised that qualifying for the Champions League means they are in a rather strong negotiating position.
“He is not in the worst club in Europe either. He can also play in the Champions League if he stays here.”
In an earlier report from Goal, Chelsea were said to have their first €20million (£18m) turned down by Rennes.
The report added that Chelsea have been pushing for a fee up to €28m (£25m) including add-ons in order to bring Mendy to Stamford Bridge, to provide competition for Kepa Arrizabalaga for the No.1 spot.
However, with their start to the new season only five days away, Frank Lampard would likely have to use either the Spain international or Willy Caballero for the opening fixture against Brighton.