Frank Lampard has decided to search for a new number one after being left unimpressed with the Spaniard's performances this season.
A return to Spain is likely for the former Athletic Bilbao man.
But any move might be tricky as the Blues want to re-coup as much of the £71m they paid for Kepa two years ago as possible.
Looking towards the future and Chelsea have identified three names to pursue this summer.
Onana is the easiest and most affordable option with Ajax open to selling the Cameroon international for £35m.