Brazilian midfielder Fred, as been a disappointment since his arrival from Shakhtar Donetsk in the summer of 2018 for £50million.
Despite showing glimpses of what he can bring to the Red Devils, the 26-year-old has not performed at a consistent level and has not managed to hold down a regular place in the starting 11.
Now reports from Europe suggest manager Ole Gunnar Solskjaer could be willing to let Fred leave Old Trafford on either a permanent or loan basis.
Possible replacement signings have also been touted, with talented Switzerland international Denis Zakaria being mentioned by Bild.
The 22-year-old has been in sparkling form for Bundesliga side Borussia Mönchengladbach this season, and reports suggest United have already registered their interest ahead of a January move.