Real Betis are making a fresh attempt to bring Hector Bellerin back from Arsenal.
Bellerin won the Copa del Rey with Betis last season while on-loan.
The fullback remains hopeful of returning to Betis - which are also eager to see a deal closed.
However, Sky Sports says Arsenal's insistence on a fee for Bellerin has frustrated Betis.
Bellerin have been pushing Arsenal to release him from his contract, but their current stand is to sell the Spaniard for the highest price possible.