The Brazilian has waxed lyrical about his fellow countryman.
The 24-year-old moved to Anfield for a fee of £29 million this summer, as reported by BBC Sport, and has netted regularly in recent weeks.
And Ronaldinho has tipped Firmino for a big future on Merseyside.
The Brazil legend is quoted as saying by the Mirror: "He's the player that I'm sure Klopp will build his new Liverpool team around.
"Klopp is one of the best coaches in the world, he will know that Liverpool need better players, he will know that Firmino will need better players around him to get the most out of his game.
"I'm sure when he joined Liverpool, Klopp was promised he could bring in his own players, and with Firmino at the centre of the team, there's no reason Liverpool cannot challenge once again."
Firmino has impressed of late but could do with showing more consistency.
What the Brazilian, as well as the rest of the Liverpool side, has missed is Philippe Coutinho. The Brazilian was in woeful form before his injury but concerning for fans is the fact his poor form still produced more than several others within the Reds squad have since.
Firmino and Coutinho at their best is a combination with limitless possibilities. Just look at the 4-1 win against Manchester City earlier this season. It would be nice if the duo could do the same against City in the Capital One Cup final, should Coutinho return to fitness by then...