Chelsea are watching Fiorentina midfielder Adem Ljajic.

Calciomercato.com says Blues boss Roberto Di Matteo is tracking Viola player Ljajic.

The 21-year-old Serbian striker hit the headlines last term when he was physically attacked by then-Coach Delio Rossi in a dugout brawl.

Ljajic was to join Manchester United as a teen before the deal fell through.