Chelsea have announced on their official website that midfielder Mohamed Salah has left the club on a permanent basis.
The Egyptian spent last season on loan with the Giallorossi and was one of the most influential players in Luciano Spalletti's team.
He moved to Stamford Bridge during the 2014 winter transfer window but struggled for form and rarely enjoyed regular first team football at Chelsea.
He was loaned out to Fiorentina at the end of the 2014-15 season where he enjoyed a very positive campaign at the Stadio Artemio Franchi.
"Mohamed Salah has completed a permanent transfer to Italian club Roma," Chelsea announced on the club's official website.
"Salah signed for Chelsea from Basel in January 2014 and made his debut in a home game against Newcastle.
"His first goal for the Blues came in our memorable 6-0 win over Arsenal when he completed the scoring, racing on to a Nemanja Matic pass and finishing well.
"After spending the second part of the 2014/15 campaign on loan at Fiorentina, he remained in Italy with Roma the following year.
"Chelsea Football Club thanks Mohamed for his service and wishes him well for the future."