The 40-year-old, a former Real Madrid team-mate, hails the Dutchman's man-management skills, as well as singling out compatriot Ronaldo as one of the best players ever
The pair played together at Real Madrid between 1996 and 2000 and the current Sivasspor boss has fond memories of his former team-mate.
"On the field he was always a leader: he wanted to teach everything to everyone," the Brazilian told La Gazzetta dello Sport.
"Kaka has told me that Clarence understand players well but I already knew that. We lived in the same house for a year and a half. He was always in the bathroom for three hours styling his hair with a horrible cream. Intolerable!"
The 40-year-old then had his say on who he regards as the best player ever and went for two former Madrid team-mates.
"If we're speaking of the very best anywhere, [Zinedine] Zidane and Ronaldo," the former full-back declared. "One time at Madrid I was out at a restaurant when a woman approached [and said]: "Ronaldo, Ronaldo, will you give me an autograph?" And I said: 'Okay, give me a sheet.'
"But when she understood [I wasn't Ronaldo], she went to the police to report me. I had to explain to the police that I'd been joking!"
Roberto Carlos worked with Roy Hodgson during his time at Inter but refuses to blame the current England boss for his unsuccessful stay at the Nerazzurri.
"He wanted me to play as a winger, I wanted to play full-back," he explained. "However, it was not his fault that I stayed only one season."
The 40-year-old then went on to reveal some interesting details about his personal life and explained that he has a number of children with various women.
"How many wives I have had? That's easy: two," the Brazilian stated. "The difficulty is the [amount of] women I've had a child with: there are eight from six or seven different mothers.
"I don't remember. Right, one was Mexican, one Hungarian, the others Brazilian ... six."