He said of the Arsenal teen: "Aaron has been outstanding whenever I have seen him train or play. This is now a natural progression for him.
"He will leave his mark on his debut, he has that much talent. I am convinced that he will be a huge figure for us for many years to come.
"You will see. Maybe some people will not notice him, but then they don't know football. We will know he is a special player.
"He is such a clever player, a rare talent. Whatever language you speak, whatever country you are from, you will recognise that he is a special talent.
The West Ham frontman added: "I cannot recall as much fuss about a young Wales player maybe since Ryan Giggs. But he was in Manchester from a young age, while Aaron has come through the ranks in Cardiff.
"We have seen a lot more about him because of that. I saw Aaron when he was 12, I have known his father for a long time, so I have been aware of his talent.
"There's a big fuss, and rightly so because he is a special talent. We don't get many like him in Wales, certainly not as good as him coming through.
"I don't want to put too much pressure on him, but everyone is very excited about him and that includes me."
Bellamy added: "John Toshack has given youth their chance, so hopefully in a few years we can mount a good qualifying campaign.
"Aaron is different, very creative and very intelligent. He can certainly benefit me.
"I just hope he does really well for us. You won't just see a player, you will see a good player.
"He has that quality. His movement, how he receives the ball and the way he sees the game are different to other players. He is rare, that is what makes him so good.
"He is at the best club and with the best manager to progress. He is in good hands, so hopefully when he comes to play for Wales we get the benefits.
"He has a good family support group around him, if he wanted to ask me anything of course he can, but I would do that for anyone."