Crystal Palace are facing competition from Benfica in their attempts to sign PSV goalkeeper Jeroen Zoet.
Zoet features prominently on Frank de Boer's list as he looks for a new No 1.
Palace have an interest in Zoet, but Benfica have now made a move for the Holland international.
The Portuguese's interest will come as a concern to De Boer, whose search for a new keeper has stalled in recent weeks.