Besiktas are making an attempt for Real Madrid captain Iker Casillas.
Marca says an intermediary contacted the player's agent just days ago to make a big-money offer from Besiktas.
Casillas won't make any decisions until he's held talks with new coach Rafa Benitez.
Two English, two Italian, one French and one Spanish club, all of which compete at the highest level, are also in the mix to recruit the goalkeeper if he is told he can find a new home.
Fenerbahce made an attempt for Casillas in January.