The 25-year-old striker was the subject of intense transfer speculation all summer but has finally joined his rival club.
At that time, he is expected to become the United’s second most expensive player this summer, with the deal reported to be as much as €55million.
“It is with great joy and pride that I join Manchester United ,” Mahrez said in a press release. lt is often a dream to wear the red jersey and experience the unique atmosphere of Old Trafford .
Manchester United have already spend a lot this summer on Lukaku, Lindelof and Matic.