Barcelona boast a buy-back option for Sporting Gijon defender Alberto Botia.
Botia's form with Gijon this season has led to a Spain call-up and also attracted interest from Valencia and Barca.
Valencia have already asked Gijon to name their price for the centre-half, but no deal can happen without the permission of Barca.
Until May this year, Barca have the option of buying back Botia for a set €2.4 million fee.