Announcing his signing with the club the 29-year-old shared a video on Twitter. He was linked to various clubs after his exit from Manchester United in June as his contract expired.
It has already been confirmed that Edinson Cavani, Lee Grant, Jesse Lingard, Juan Mata, Nemanja Matic and Paul Pogba are leaving United.
All football is currently on hold due to the coronavirus pandemic. The English Premier League is set to return on June 17.
Manchester United manager Ole Gunnar Solskjaer had to call star defender Paul Pogba from the bench but by the time he was called on the pitch, the game had already slipped from their hands.
Manchester United had a terrific last week as they reached the fifth spot in the Premier League table with back-to-back wins against Tottenham and Manchester City.
England marched into the semi-finals by virtue of a 2-0 win over Sweden on Saturday night.
England edged Colombia in a thrilling penalty shootout on Tuesday night to make the quarters.
The 25-year-old has left his mark on the tournament with a special strike from distance.
The 25-year-old midfielder was the toast of social media for his classy gesture after England's win over Costa Rica.
Chelsea edged United 1-0 in the FA Cup final on Saturday.
