Burnley have offered refunds to all fans who attended their friendly against Hannover, after it as abandoned due to fan violence.
The game at Turf Moor was cancelled at half time after supporters in the away end tried to attack fans of the Premier League club.
Seats were ripped out and thrown, and a police officer and two stewards required hospital treatment after attempting to stop the disorder.
A statement from the club said fans have a week to ask for their money back, and any unclaimed refunds will be given to charity.