Kepa, who established himself as Athletic Club's first-choice goalkeeper last season, has continued to impress this term despite his club's disappointing start to the 2017-18 season. The 23-year-old's form won him a place in the Spain squad for November's friendlies, making his international debut against Costa Rica on Saturday (11 November).
According to Marca, Arsenal and Juventus have already made it known through intermediaries that they have an interest in signing the shot stopper, with Real Madrid set to make a move for the player next summer, according to the same publication.
While Kepa has so far remained level-headed when talk of his future has come up, speculation over his next move is bound to ramp up with his current contract at the Basque side set to expire in 2018.
But his international teammate and United shot stopper De Gea has advised his fellow goalkeeper to stay in his homeland, noting those who do leave for teams aboard inevitably find it more difficult to get noticed.
"All the players like me that leave Spain, we are not followed as much as those that are playing at home and people forget a little bit about us," the United goalkeeper said, ESPN report. "That is why we try to be there and do things to be talked about."
Kepa recently admitted that while he is aware of speculation surrounding his future he remains fully committed to Athletic.
"I am happy at Athletic, I am calm, I only focus on working for my club," Kepa said. "I know that people talk about me because I have family and friends who read the press and listen to the radio, obviously I am not blind, but I am calm.
"I'm not nervous about the rumours, I am what I am because of what I do, not because of what they say."