Paris Saint-Germain defender Marquinhos is a reported January transfer window target of Manchester United.
The 20-year-old has slipped down the pecking order at his club and has not started a league match since the beginning of December.
According to Le10sport, United have approached the Brazilian's representatives ahead of tabling a bid.
PSG signed Marquinhos in July 2013 from Roma for a reported fee of £27m.