Sunderland are interested in signing Granit Xhaka from Bayer Leverkusen; the 32-year-old has three years left on his current deal; Sunderland face competition from Saudi Arabia for the ex-Arsenal midfielder;

Granit Xhaka established himself as one of the Premier League's top midfielders during a seven-year spell at Arsenal and could now be on his way back to England's top flight