Real Valladolid owner Ronaldo says letting Lionel Messi leave won't solve anything at Barcelona.

The Argentinian is considering his future at the Camp Nou due to frustrations with the club's recent off-field antics and on-field struggles, but the Brazilian thinks the Catalans should do all they can to keep him.

"It's very unlikely that he'll be able to leave Barcelona at the moment, especially when there's a crisis of results," Ronaldo said at a webinar hosted by Santander.

"Messi is a reference for the team and, if I were Barcelona, I wouldn't let him leave in any situation.

"He has a great and strong relationship with the club and I don't think he'll stop being in love with the team."