Man Utd face competition from Barcelona for PSG defender Marquinhos, according to French newspaper L’Equipe.
United have been linked with moves for the Brazilian centre-back in the past but recent reports suggest that Barcelona are considering swooping.
Jose Mourinho could look to further bolster his defensive ranks in January and Marquinhos is set to once again be linked.
But Barca are reportedly planning to spend as much as £50million to land the 22-year-old.
The 22-year-old has made 119 appearances for the French titans since joining from AS Roma in the summer of 2013, but finding his place in the starting XI has been a chore at times.
Thiago Silva has been a near-constant in the starting setup, while Luiz was a previous obstacle blocking his path, as was fellow Brazilian PSG alumnus Alex, who left for AC Milan in 2014.