Dembele has scored three goals in six games for Celtic this season
Celtic striker Moussa Dembele missed training on Wednesday as manager Brendan Rodgers confirmed there is "big interest" in the player from one club.
Dembele was at Celtic Park with his representatives to discuss his future while the squad trained at Lennoxtown.
French clubs Marseille and Lyon are reportedly interested in Dembele, 22.
"There's a lot going on with Moussa at the moment," said Rodgers before Thursday's Europa League play-off second leg against Lithuania's Suduva.
"There is speculation around him. Moussa is not a player we want to lose. It is on-going discussions. There hasn't been an official bid as far as I am aware but interest.
"He is available for the game but I will speak to him later on."
Rodgers, whose team are level at 1-1 after last week's first leg, would not say if Lyon were the club to which he was referring.
He did confirm his other French striker Odsonne Edouard was back in training after recovering from a knock.
More to follow.
Source: bbc.com