The young French striker left Parma last week for Inter.
Dubroca coached Bonny in the youth team of Chateroux and told Tuttosport: “His arrival at Inter is certainly an important step, further step in his career, which will now take a new direction.
“He performed well and made a name for himself at Parma, and it was a fact that he could strive for a place in a top club.
“A potential starter in Milan? He has the potential, determination and personality to become a top player, but it will certainly take time. Could Bonny really be the new (Marcus) Thuram? He just has to be Bonny. Of course I hope he can reach Thuram's level; he certainly has the possibility.”
The Nerazzurri paid € 25 million for him and Dubroca added: “It is a very important compensation, but we know the market, and given his age and potential interior certainly has an excellent step. Let me add one thing: Yoan has always maintained his positive mentality. It is always a pleasure to communicate with him every man.”