Last week marked Totti's 20 years in Serie A.
"No one would have thought that Totti would have a career like this," he told Sky Sport Italia.
"But even from his debut you could see that he was destined to succeed.
"I have a great admiration for him. Look at the likes of Giggs, Gianfranco Zola, Roberto Baggio, Alessandro Del Piero - it is hard to believe that anyone can get to 40 years of age and keep playing, but Totti could.
"He is a boy who loves this city. He could have won more elsewhere, but he loves Rome."