Manchester United forward Mason Greenwood, who is currently on loan at Spanish giants Getafe, has been told how he can improve. It’s been a promising return to first-team football for Manchester United forward Mason Greenwood following nearly two years out of football with the academy graduate being linked with a move to Barcelona. His future at Old Trafford is unclear with Sir Jim Ratcliffe and Ineos prepared to make a decision on the Englishman’s future in the summer and could even sell the 22-year-old on for a healthy profit. With Greenwood coming through the club’s academy, United would st…