Chelsea goalkeeper Kepa Arrizabalaga has spoken of working with some of the sport's great managers while with Athletic Blbao.

Both Leeds United boss Marcelo Bielsa and Barcelona's Ernesto Valverde came in contact with Kepa during his career.

He recalled to chelseafc.com: "When I was playing in the lower age groups I had different managers and I took something different from all of them. But I was only 16 when I was involved with the first team and I learnt a lot from trainers such as Joaquín Caparros and Marcelo Bielsa.

"The fact I joined the first team at such young age meant it was a major turning point. It meant I had to mature much quicker and then there was the opportunity given to me by Ernesto Vervelde."

Kepa added: "Leaving your environment, and the place where you have grown up, is always going to be difficult. But I felt moving to Chelsea was an important step in my career so that's why I wanted to do it, but of course I will always be grateful to Athletic Bilbao for all the years I spent with them, and for all they've given me."