The 30-year-old winger is out of contract at the Glasgow giants at the end of the season, according to The Daily Record.
The Daily Record has quoted Lennon as saying about Sinclair potentially leaving in January: "I hope not. He will still play a part.
“We've got nine games in December and I imagine Scott will figure the squad or even the team in some of those games."
Important player for Celtic
Sinclair may be out of favour at Celtic at the moment, but the former Aston Villa winger remains a very important player for the Hoops.
With the Bhoys involved in the knockout rounds of the Europa League this season, manager Lennon will need the Englishman.
However, if Sinclair is not offered a new contract or he does not want to stay, then it would make sense for Celtic from a business point of view to sell him in the January transfer window and get some transfer fee for him.
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