Esportiu Llanca have issued grovelling apology after the woman was filmed in her underwear as players watched on.
They had just won promotion to the Catalan Second Division.
The woman – wearing a leather getup and mask – climbs onto a chair as players cheer and chant.
She then strips down to her underwear before dancing on the floor, and pouring champagne on herself.
“CE Llanca would like to apologise if anybody felt offended by the incidents which took place in the changing rooms one the first-team match ended”
The footage has been doing the rounds online, before the club spoke out.
A statement read: “CE Llanca would like to apologise if anybody felt offended by the incidents which took place in the changing rooms one the first-team match ended.”
It added she had been hired as “a gift” for one person.
The statement added: “It was never the intention to offend anyone, just to celebrate the promotion to the Catalan Second Division.”
Local reports then suggested she was hired by the club’s secretary, Franscesc Romero, who said nobody was aware of his surprise.
He added: “It was a party atmosphere, nothing got out of hand.
“There was cava, smiles and joy, but she did her show calmly and at the end, she got dressed and left. Everything was normal.”
Daily Star Online has approached Llanca for a response.