2. Dani Alves
The Brazilian will be released by Barcelona after this season as his contract ends. Although Alves is 31 and would not be able to continue for a very long period of time, he can still do the trick and United would have a ready made solution in him as they look for other options on a longer term basis. Alves would also not cost much to United as Barcelona would not be able to charge a huge fees for his transfer and it will be a great thing for United to get an experienced man as Alves.