#1 Gareth Bale
Gareth Bale has failed to hold on to his place at Real Madrid after the departure of Cristiano Ronaldo. Bale has had injury issues this season and has also looked out of form in a few matches. With Zinedine Zidane being brought back to the club as manager, Gareth Bale might decide to leave the Spanish giants in the summer. Manchester United has been linked with him in the past and they should try to sign him this summer.
Manchester United has failed to find a genuine right-winger in the past few seasons and that has affected them in a few games. Bale is a good option to fulfill this role and considering the Welshman's gifted pace and physical presence, he could add an edge to the attack of the Red Devils.
Hence, Gareth Bale could be the final piece of the puzzle for Manchester United to return back to its glorious past.