Gomes briefly played with Firmino at Hoffenheim.
The Reds secured a deal thought to be worth around £29 million with Hoffenheim. Gomes recalled the brief spell he had with Firmino at Hoffenheim, telling Sky Sports: "He is a very talented player. I played with him at Hoffenheim for a few games. At that time he wasn't 'there' yet but I could see he was going to become a very good player.
"I believe it is a very good signing from Liverpool and I believe he is capable to do very well in the Premier League. Of course, the Premier League is difficult and he will need time to adapt because he is still young but he has everything to do well in the Premier League.
"He can hold the ball well, he can pass the ball very well. I believe, as a number 10 is his best position.
"He has the quality to pass the ball and he has the quality to finish as well."
The signing is tipped by some to be a statement of intent from Liverpool given Firmino was linked with other Premier League clubs, as they look to put last season's very disappointing campaign behind them by trying to return to the Champions League places.
It is often thought the role behind the striker is his best role, but Firmino can play in several positions across the forward line including the main striker, and his eye for goal is going to be important for a side that only managed to find the net on 52 occasions last season in the Premier League - compared to the 101 from the season before.
There does seem to be a lot of pressure on Firmino to deliver in the early stages of the season given the difficult start the Reds seem to have, especially on the road, and as Gomes says - Firmino will need time to adapt to the league.
If he can hit the ground running, however, he will be on the road to becoming one of the fans' favourites in a pretty short space of time.