Mason Greenwood is the Manchester United player closest to a summer exit with several clubs interested 22-year-old. This summer Manchester United need to sell in order to buy big it appears. But in terms of sales, only Mason Greenwood appears to be close to a move. Greenwood has several different options this summer as multiple big European sides line up to sign him after his impressive campaign on loan in Spain with 10 goals and six assists in 36 appearances. Lazio appear to be most keen and have even made a bid, while Juventus have considered making a bid too. But now, Getafe’s president has…