Ronaldinho hopes Lionel Messi signs his new deal with Barcelona.
However, he will remain a supporter should the Argentine leave.
"It's difficult for me to say anything because he's a close friend, and I will always be bound by friendship.
"If his heart indicates that he should go to another club and taking into account that I'm a Barcelona ambassador, I would support him.
"Although what I would like is that he stays at Barcelona. Wherever he plays he would make the difference," said Ronaldinho.