According to Express UK, Bakayoko will join the Ligue 1 side on a season-long loan deal that can be made permanent for £32million next summer.
DAILY POST had reported that Bakayoko is set to leave Chelsea for a return to Monaco, his former club.
Monaco want to take their former player back on loan after the 25-year-old failed to meet the expectations at Stamford Bridge.
Bakayoko spent last season on loan with Italian giants, AC Milan.
The Frenchman has been deemed surplus to requirements by the Blues hierarchy.
He joined Chelsea from Monaco for £40million in July 2017.