The Red Devils are understood to be closing in on the Argentine World Cup finalist, with Louis van Gaal’s search for a new defender having intensified since Saturday’s loss to Swansea.
Nani was initially set to be used as a makeweight to drive Rojo’s price down, but the Portuguese winger is not yet ready to return to his homeland and is instead holding out for a better offer before the transfer window closes.
So now United are assessing whether or not Sporting want Anderson, who has been a disaster for the club since his arrival in 2007.
The Brazilian starred for the Lisbon side’s rivals Porto before joining United, earning a reputation as one of European football’s top young players in Portugal.
Sporting may be willing to give him another chance, with the player himself perhaps open to a deal after rejecting a switch back to his home country last week.
Rojo is seen as United’s top defensive target, with the South American able to play at centre-back or on the left side of the backline.