The pair played together at Roma.
"Sincerely I'm very sorry for every player who has left the team because when you stay with someone day after day you can understand what kind of person he is," Italian legend Totti said.
"So this happened with Salah, with Alisson and other players who left Roma.
“It is normal in that moment you feel very sorry but with Momo I had a particular relation.
"In fact every time he played and scored with me he always told me he felt like a different player because he had fun to play with me and he liked the way I put him in front of goal with my assists.
"He is an exceptional person and a true man who gave a lot to the club.
"But at the end unfortunately you have to make decisions and we have to respect this.
"I think he made the right decision to go to Liverpool because they are one of the most important clubs in Europe.
"They've won many trophies so a top player like him should play in a top club like Liverpool.
"We're still in touch by message and I'm very happy to say that I met a great player and a great person."