Cesc Fabregas has voiced his frustration at Arsenal's "impotence" after a fourth successive season without a trophy.
The Gunners have failed to win any silverware since lifting the FA Cup in 2005, much to the annoyance of captain Fabregas.
And the midfielder, part of the Spain side stunned by the USA in the semi-finals of the Confederations Cup in South Africa, admitted Arsenal's shortage of success was affecting team spirit.
"The absence of titles at Arsenal is what angers me the most," he is quoted as saying in The Sun.
"Cristiano (Ronaldo) said he's leaving Manchester United because he had nothing else to win. For me right now it is the exact opposite, seeing the impotence.
"This year we wanted it, we were giving everything - but we couldn't reach the level that everyone expected of Arsenal.
"When you win, you're well. But when you don't, everyone is in a bad mood. For four years now, we've needed a title to regain our belief in ourselves."
Fabregas stopped short of saying he wanted to leave Emirates Stadium but insisted he needs to be "happy" during his career.
He said: "If I have to say I want to leave I will do it face to face. If one day I'm not happy, I am the first who will tell the manager.
"I admire Arsene Wenger but each of us has his own life and looks after his own interests.
"My seventh season is about to start. It's a lot when you're just 22. When you stop to think, you see that time flies.
"In football, you have to learn fast and take the best decisions for yourself and try to be happy."
The playmaker moved to Arsenal as a teenager from Barcelona but admits his family, all Barca fans, would not prevent any possible future move to Real Madrid.
He added: "Of course my family would understand if I signed for Real Madrid because they love me, they want me to be happy and what is best for me.
"They'd support me - whichever club I joined. My family will always be there for me - whatever decision I make.