Wolves striker Diogo Jota's deal carries a sell-on clause.

Jota, 21, joined Wolves on a long-term contract in the summer from Atletico Madrid after a successful season on loan at Molineux.

Jota is understood to have cost Wolves around £12m, says AS, and Atletico have a clause which entitles them to a percentage of any future sale.

That means that if Wolves sell Jota, Atletico will be due a guaranteed slice of the transfer fee.