Alves has failed to impress at Boro since joining the club in a £12million deal from Heerenveen in January 2008.
Al-Sadd are reported to be favourites to sign the striker, who also has been linked with a move to Spain.
Alves has failed to impress at Boro since joining the club in a £12million deal from Heerenveen in January 2008.
Al-Sadd are reported to be favourites to sign the striker, who also has been linked with a move to Spain.
