Barcelona have resisted interest in Santi Ramos Mingo.
The defender has attracted a firm offer from a European rival, but Barca refuse to sell.
Mundo Deportivo says despite Barca's debt concerns, they are insisting Mingo is not for sale.
The youngster's deal runs to 2022 with a two-year option and he has joined coach Ronald Koeman's senior squad for preseason.
Indeed, management see Mingo ready to step up should they find buyers for Clement Lenglet and Samuel Umtiti this summer.
