Atletico Madrid have made a €12 million offer for Deportivo La Coruna fullback Luis Filipe.
Marca says the offer was made last week. However, Depor are holding out for €15 million.
Atletico aren't ready to give up, with the Brazilian now fully fit after a horrific ankle injury suffered last season.
"It is true that Atletico are interested in Filipe but the issue is still very green," Depor president Augusto Cesar Lendoiro said.