Manchester United boss Ole Gunnar Solskjaer is targeting a specific defensive player for the January market.
Solskjaer is seeking a new left-sided centre-back to partner Harry Maguire at the back.
Victor Lindelof, Eric Bailly and Axel Tunazebe have all appeared alongside Maguire this season.
ESPN says United have identified Braga defender David Carmo as the man they want to bring in.
Italian sides Fiorentina and Roma both enquired about the 21-year-old in the summer transfer window.
