An Anderlecht fan has been sentenced to eight weeks in prison for assaulting an emergency worker after his side's defeat by West Ham in the Europa Conference League game on Thursday.
Degroof was one of three fans of the Belgian club convicted around the game at London Stadium, where 13 fans were arrested.
Anderlecht later apologised for the behaviour of their fans.
Seats were thrown and flares set off among the Anderlecht supporters during West Ham's 2-1 victory.
Two police officers needed hospital treatment - one for a suspected broken wrist and the second had stitches for a head injury.