Brazilian legend backs Tottenham to win the Champions League, if they believe.
Tottenham Hotspur are in the driving seat to qualify past Manchester City for the Champions League semi-finals after taking a 1-0 first leg lead.
There is still much work to be done, especially if they are to go on and win the competition.
Ronaldinho explained that belief and fearlessness can take Tottenham all the way.
He said: "Why can't Spurs win the Champions League?
"Because they don't have the history in the competition - or because they have never won it before?
"Every team who has won the Champions Leauge had to win it for the first time once.
"Their result against Manchester City, who are one of the best teams and have some of the best players in the competition, showed that they can compete with the best.
"At this stage they will believe they can go all the way - and if they play as they can then maybe they will."
Spurs visit the Etihad on Wednesday night, hoping to set up a semi-final against the winner of Juventus and Ajax, who will face off 24 tonight.
Ronaldinho's comments underline how Tottenham are now being taken seriously as a contender, and City are suddenly no longer seen as invincible.
Manchester City crashed out at the same stage last year against Liverpool and will be desperate to avoid a repeat of that fate with another loss to an English side.