People trying to sell tickets for Derby County's play-off match at Wembley on the internet could face prosecution, police have warned. Officers said they would be monitoring internet auction sites prior to the match on 28 May for unlicensed sellers and ticket touts.
Sgt Tony Rathbone from Derbyshire Police said anyone prosecuted could be made to pay up to �5,000 in fines.
Derby County said anyone caught selling tickets could be banned from the club.
Returns for refunds
"We want to make fans aware of the law in this situation and that the only people that can sell tickets are licensed ticket outlets," said Sgt Rathbone.
"In this case that is Derby County, Seetickets or other designated ticket companies. Anyone else offering tickets for sale, whether it is via the internet or elsewhere, is committing a criminal offence.
"Fans who find themselves in possession of a ticket which they no longer require should contact the club to inquire about returning the ticket and gaining a refund."
Derby County will play West Bromwich Albion in the Championship play-off final at Wembley Stadium.