When asked he admitted that the two proposals had come from long-term admirers AC Milan and City, and added: "Manchester City are splashing out more in their offer."
Barca would rather sell to the Premier League side, who are believed to be offering a sum in the region of 32million euros.
However, Laporta insisted the club would choose the offer which best suited "the interests of the player and Barca".
He continued: "Ronaldinho should leave the club with honour, because he was a man who gave Barca fans their excitement back, he excited us all.
"He played a key role in the capture of two league titles, a Champions League trophy and two Spanish Supercopas. We have to remember that."