Juventus and AC Milan are also monitoring the 22-year-old, but Liverpool are believed to be favourites
The Netherlands international has struggled for game time in his debut season at Old Trafford.
If the Champions League was won by the club with the waviest threads, these teams would all be in with a shot
Injuries have left Jurgen Klopp short of options at the back and he could rectify that issue in January
NEW KITS Barcelona, Bayern Munich, Inter Milan and Borussia Dortmund are among the sides to have revealed new shirts so far
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