The world's most expensive goalkeeper Kepa Arrizabalaga is being lined up for a shock return to Athletic Bilbao.

Chelsea may offer fellow keeper Kepa Arrizabalaga to Atletico in part-exchange as they are reluctant to meet the Spanish club's £110m asking price for Oblak.

Chelsea are keen on signing Ajax and Cameroon goalkeeper Andre Onana, 24, as a replacement for Kepa Arrizabalaga. The 25-year-old Spaniard has been linked with a move to Valencia this summer on a two-year loan deal.

Chelsea are still keen to sign AC Milan goalkeeper Gianluigi Donnarumma and could include current No 1 Kepa Arrizabalaga in a swap deal.

Kepa will replace Belgium's Thibaut Courtois, who is confident his refusal to return to Chelsea to train will be rewarded with a move to Real Madrid. The Spanish side are prepared to allow Croatia midfielder Mateo Kovacic, 24, to move to Stamford Bridge on loan as part of the deal