There has been no formal approach from Sunderland who are looking to add to their attacking options ahead of the new Premier League season.
United have given no indication that the winger is available but he faces stiff competition for a place in the team, with Memphis Depay, Ashley Young, Antonio Valencia and Juan Mata likely to be ahead of him in the pecking order.
Meanwhile, Leroy Fer’s move from QPR to Sunderland looks to be off after Sky sources reported the midfielder returned to Loftus Road after failing a medical on Wearside.
Sunderland’s focus now appears to be on pushing through a deal for French midfielder Yann M’Vila as they prepare for the new season.
Dick Advocaat’s side, who narrowly avoided relegation last season, begin their Premier League campaign away to Leicester City this Saturday.