The French striker has scored 13 goals for the table topping Scots as they ease towards their 48th league title.
Chelsea were interested in signing £40million-rated Dembele during the January transfer window.
Chelsea target Moussa Dembele boards flight to London
Tue, January 31, 2017
Celtic striker Moussa Dembele has been spotted on board a flight to London on deadline day amid rumours of a move to Chelsea
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Moussa Dembele has been spotted on board a flight to London on deadline day
Arsenal and Manchester United have also reportedly sent their scouts to watch the talented forward.
Dembele signed a four-year deal when he joined last summer from Fulham.
Moussa Dembele was linked with a move to Chelsea in January
And his agent Mamadi Fofana insists his client is planning on staying at Parkhead.
“Moussa doesn’t stress,” he told the Daily Record.
“He signed a four-year deal at Celtic and, in his head, he’ll be at Celtic for those four years.
Celtic striker Moussa Dembele
“If he has to leave, that will happen at the right time, but it’s not in Moussa’s head or my head.
“In January, there was speculation, but there will always be speculation if he does well.
“It’s good. It means we are all doing well. The boy is doing well, Celtic is doing well and we as agents are doing the right things for everyone.”