The young defender has agreed personal terms with the Blues.
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And talkSPORT says Jacquet has informed Rennes that he wants to make the move this January transfer window.
Chelsea are in talks with Rennes over a fee for the 20 year-old, though are unimpressed by the current €65m valuation.
Rennes want to at least match the club record €65m they sold Jeremy Doku to Manchester City for two years ago.
They'd also prefer to wait until June to sell Jacquet as they seek Champions League qualification this season.