The Argentina international was linked with a move to the Rossoneri in January, and the governing body's representative believes that it could be right for him to leave the EtihadManchester City forward Carlos Tevez to move to AC Milan.
The controversial Argentine forward was linked with a move to the San Siro outfit in January, but negotiations ended unsuccessfully.
But, with Zlatan Ibrahimovic on the verge of a move to Paris Saint-Germain and Roberto Mancini reportedly interested in signing Robin van Persie, Riso has started talking again about a possible switch.
“Tevez to Milan? There were complicated negotiations, but certainly we can say that the Argentine has always been a dream signing for Adriano Galliani,” he told Sky Sport Italia.
“Perhaps this is the right time. I'm leaving for Manchester, but my business is related to the future of [Luca] Scapuzzi. While on a trip you can do many things however," he concluded.
Tevez has stated recently that he now feels settled at the Etihad Stadium, despite requesting a transfer a well-publicised row with Roberto Mancini last season.