Memphis passed a medical at Man United last month but the deal was not officially confirmed until this week.
A number of fans have been getting excited about the player’s arrival after he fired PSV Eindhoven to the Eredivisie title last season.
Smalling and Shaw passed on their best wishes to Memphis before they all link up together during United’s pre-season tour of the United States.
A quick, explosive winger, Memphis has bags of potential. The sky is really the limit for the player in terms of what he can achieve at Old Trafford.
United continue to be linked to the likes of Nicolas Otamendi and Ilkay Gundogan and the hope for fans is that they wrap up their business quickly so all the players get settled in.
Memphis will have the benefit of going through a full pre-season at United and he will be raring to go when the next Premier League campaign kicks off in August.