Leganes goalkeeper coach Joseba Ituarte has hailed the potential of Andriy Lunin.
Lunin has spent the season on-loan at Leganes from Real Madrid.
"He is ready to play at the top level in LaLiga," Ituarte said of the Ukrainian on Radio MARCA.
"I see him as a goalkeeper with a great future.
"If he can minimise the errors then he can play for a big team, a Champions League team."
On hanging onto Lunin for another season, he added: "He is happy at Leganes, but the final word will be Real Madrid's."