The Spain international left the Basque club in 2018 to join Chelsea, which ended a 14-year spell with the side he joined at nine.
Kepa commanded a record transfer fee for a goalkeeper at the time, and has since become first choice for both Chelsea and Spain.
“Of course I would like to return to Athletic.
“I don’t know when or how or what, but playing at Athletic obviously I’d like that. I have great memories,” Kepa told Spanish football show, El Chiringuito.
The 25-year-old also reflected on the heavy speculation, that saw him come close to joining Real Madrid in January 2018.
“For several months my grandma saw more of me in the newspapers than in the flesh.
“There was a lot of talk about me. I was also injured for a while so it wasn’t a good moment for me. My contract was due to expire and from January onwards I was able to start talking to other clubs.
“I couldn’t see myself joining [another] club. I ended up renewing my contract with the idea of staying, but six months later I left. That was the only contraction,” Kepa added.
