Chelsea announced on Saturday evening that
The 25-year-old spent last season on loan at Milan, but he returned to Stamford Bridge at the end of the campaign, despite the Italian giants having the option to sign the midfielder permanently.
The Frenchman scored three goals for Chelsea, and played the full 90 minutes in their FA Cup final victory over Manchester United.
Bakayoko failed to settle in during his time in West London, and he evidently plays no part in manager Frank Lampard's current plans for the 2019/20 season.
Monaco are struggling at the foot of Ligue 1, and in desperate need of reinforcements. Bakayoko will have good memories of his time in France, winning the title with Le
The Chelsea man has been unable to recapture his best form since leaving Monaco however, and he will hope to kickstart his career and guide his new side up the French league table.