Dani Ceballos says Gareth Bale has been unfairly treated during his time in La Liga with Real Madrid.
Bale became the most expensive player in history at the time of his £86.3 million move to the Bernabeu in summer 2013.
The Welshman has won La Liga, the Copa del Rey and four Champions Leagues in Spain, scoring in major finals but failing to win over sceptical support.
Bale attracted criticism for holding up a banner that read 'WALES. GOLF. MADRID. IN THAT ORDER' during a recent international game, alluding to his oft-criticised hobby.
He is now being linked with a return to the Premier League – most notably with Newcastle – which Ceballos feels would suit him.
The midfielder, who has spent this past season on loan at Arsenal from Real, believes people who do "not trust" Bale are misinformed.
"It is a league that would be quite good for him, but he is a fundamental player for Madrid," Ceballos told Deportes Cuatro, according to Goal.
"Let us not forget everything he has given the club. Whoever does not trust him, put on the Champions League final."
"He has given enough to the club."
Ceballos also suggested he sees his own future back in Spain, despite impressing recently for Arsenal.
"I am happy, and I have a contract with Real Madrid," he said.
"I am 23 years old. Now I feel much more a player and I am prepared for any challenge that comes my way."