De Laurentiis pre-empted the club's confirmation of a deal.
“Welcome Tiemoue," ADL wrote in one of his trademark tweets.
Napoli have then released an official statement on their website:
"The following season he moved to Monaco, where he made 63 appearances over three seasons and helped them win the title in 2016/17.
"Chelsea acquired his services in the summer of 2017 and the midfielder played 29 games in the Premier League and Champions League scoring two goals. He also won an FA Cup winners' medal with the Blues.
"Tiemoue spent the 2018/19 season at AC Milan on loan, racking up 31 appearances for the Rossoneri with a goal in the Milan derby.
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!