KOLOBRZEG, Poland -- The Danish Football Association says Nicklas Bendtner's underwear stunt during the match against Portugal ran afoul of an exclusive sponsorship deal as well as UEFA's rules against ambush marketing.
Celebrating his second goal in Denmark's 3-2 loss, Bendtner lifted his shirt and dropped his green boxers slightly, revealing the name of Paddy Power, an Irish betting firm across the waistband of his underpants.
Association spokesman Lars Berendt told The Associated Press Thursday that the Danish FA has "an exclusive deal" with Ladbrokes, another gambling company, "and this is obviously a breach of it."
The Danish association has told Bendtner he is not allowed to wear the Paddy Power underwear in Sunday's match against Germany.
Bendtner maintains that he didn't realize he had done anything wrong.
"It is just a pair of lucky boxer shorts that I used in the first game as well and have used before the tournament," he said. "I didn't know that I was breaking any rules but I am aware of that now."
It wasn't immediately clear whether Bendtner would face any action for Wednesday's display.
Information from The Associated Press was used in this report.