Midfielder Jeremy God will continue his career in Italy.
The transition of the 21-year-old God to the camp of Sassuolo is reported by both clubs.
It's about a full-fledged transfer, but Italians add that the "blue" reserved the right of repurchase.
The amount of the transaction, as well as the terms of the contract of the newcomer, were not disclosed.
Ivorian last season came at the base of Chelsea for the match of the first round of the Premier League against Burnley, but his game did not last long - in the 18th minute, Antonio Conte replaced him after removing Gary Cahill.
Later, God was rented in Birmingham (31 matches, 2 goals). To Birmingham he was rented to Rennes and Granada.