Norwich City full-back Martin Olsson has been reported to the Football Association for pushing referee Simon Hooper during yesterday's Championship match against Wolverhampton Wanderers.
The Swede, 26, appeared to shove Hooper after he was shown a second yellow card during the Canaries' season opener at Molineux.
Olsson is already ruled out of Norwich's next match against Watford at the weekend, but could be suspended further if found guilty of misconduct.
Norwich conceded the only goal of the game soon after Olsson's sending off to begin their first season back in the Championship with a defeat.
The Norfolk club are also looking into claims of racism among their supporters during the game.