Bastian Schweinsteiger, Marcos Rojo, Daley Blind and Juan Mata are among the players United will put up for sale.
The Yellow Canaries have been keeping close tabs on Schweinsteiger and reports that he could be available have put the club on alert.
Besiktas are also actively pursuing a central midfielder to add experience and strengthen their midfield as they prepare for Champions League football next season.
The Black Eagles are aware of Schweinsteiger’s availability a source close to the club told Turkish-football.com but no offer or enquiry has been made.
Fenerbahce and Besiktas will both be playing Champions League football next season and are currently the bookmakers favourites to lock horns in the 2016-17 title race as well.