The 23-year-old defender started France’s Nations League game against Croatia but lasted only 45 minutes before being withdrawn.
His absence for the second half prompted questions from the press, who are aware that Chelsea have been trying to negotiate a deal for the defender, and that any injury could complicate the move.
French manager Didier Deschamps took time to reveal that the defender had been carrying an injury for most of the season and had scheduled operation to correct it.
He said: said: “I knew very well his physical condition today.
“Tomorrow he will have a [surgical] intervention because he has a problem that has been going on for several months.
“In principle, if everything goes according to plan, he should be available for the start of the season.”
Chelsea have lost Antonio Ruidger to Real Madrid and have released Andreas Christensen with the defender reportedly closing in on a deal with Barcelona.
Check out the latest Premier League transfer news below...
1. Awoniyi closes in on Forest move
Taiwo Awoniyi was absent from Union Berlon’s pre-season preparations on Monday morning as he closes in on a move to Nottingham Forest. (BILD)
2. Trezeguet nears exit
Aston Villa are close to reaching an agreement with Turkish club Trabzonspor to sell winger Trezeguet for about £3m. (Daily Mail)
3. Rabiot wants out
Adrien Rabiot has told Juventus that he wants to leave the club this summer – and Chelsea, Manchester United, and Newcastle United want to sign the midfielder. (L’Equipe)
4. Magpies still want Calvert-Lewin
Newcastle United remain interested in signing Everton’s Dominic Calvert-Lewin this summer. (The Athletic)