The eight-capped Argentine forward has not been in fantastic form for the Wearside club this season, but he has a wealth of experience behind him, and his poor debut Premier League season on loan from Internazionale could be put down to his adaptation to English football.
He has made 17 appearances in all competitions, but has only netted one goal in an FA Cup victory over Fulham.
The 26-year-old was not included in the matchday squad for Dick Advocaat’s first game in charge of the Black Cats, and it remains to be seen whether he features at all for the Dutch coach as the club look to fight off relegation to the Championship.
The Gazzetta report claims that Sunderland have to fulfil their right of ‘compulsory redemption’ for a fee of €11 million if they remain in the Premier League, despite his poor season at the Stadium of Light.
There is no knowledge as to whether Sunderland can buy out their right to purchase Alvarez, as, even if they do remain in the top flight, the winger has done little to prove he is cut out for the Premier League.