McCarthy claimed his first trophy as a head coach on Saturday as City beat SuperSport United 4-1 on penalties in the MTN8 final at Moses Mabhida Stadium in Durban.
The 40-year-old, who won the UEFA Champions League as a player with FC Porto, served as an assistant coach at Belgian outfit Sint-Truiden before taking over the reins of the Citizens at the beginning of last term.
Comitis is encouraged to see McCarthy achieve success in only his second season in charge of a club.
"If Benni goes one day and I'm sure that'll happen, it's in the game, it's football, I hope he goes to the big clubs in Europe," said Comitis, who formed City in 2016 when he bought the topflight status of Mpumalanga Black Aces.
"That's what I really hope for him. But at this stage there's no discussions about that, we are just too happy to have a trophy in our cabinet."
He added: "When you put something together and it's a thought in your mind, and it starts like that and then it starts to materialise into what you truly believe it can [become, it's satisfying]."
Meanwhile, Comitis confirmed the players would receive half of the R8-million prize money for winning the tournament.
"We'll go 50/50 with the players," Comits said.
"It has been like that, they put in their share and we put in our own share ... That's how we usually do it. But the players weren't even bothered about that at this stage.
"They're so happy to have the trophy in the cabinet and that's probably the most important thing for us and their careers."