After the passed medical yesterday, here's the official statement: "Sassuolo Calcio communicates to have completed a deal for Jeremie Boga, born in 97' midfielder, acquired on a permanent deal with a buy-back option from Chelsea FC".
The deal has cost the Neroverdi about €3.5m; the Ivorian player, born in Marseille, has played 34 games last year with Birmingham City in Championship, scoring 2 goals and delivering 3 assists.