John Steen Olsen first tipped off Ajax about Ibrahimovic 16 years ago and is convinced Dolberg can be just as successful.
"Yes, I must say Kasper is a giant talent. I really wanted to have him down here a few years ago, but he was injured, and he came a year later," he told BT.
"Kasper has for me always been a really good player and I think he has all the qualities to become a top player. And he is a fantastic lovely guy.
"He is quiet and calm with both feet on the ground."