Sevilla reportedly want Leeds United goalkeeper.
Sevilla transfer chief Monchi is exploring the possibility of signing Casilla, the paper claim.
Leeds signed Casilla from Real Madrid in January.
Both Leeds and Casilla hoped that they would be playing Premier League football right now.
Instead the goalkeeper's play-off semi-final mistake was a contributing factor to Leeds failing to go up.
What should Leeds do?
Leeds should be viewing Casilla as an asset, who they do not want to replace.
The alternative is Bailey Peacock-Farrell, who Leeds boss Marcelo Bielsa has shown he does not have full faith in.
A Casilla exit would mean Leeds would need to replace him, not easy at this late stage of the transfer window.
Leeds did not pay a fee for Casilla, and he is one of their highest earners.
If Casilla wants a move and Leeds are offered a substantial fee, it's understandable there would be a temptation to cash in.
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