Joorabchian represents both Mascherano and Manchester city striker Carlos Tevez, who remains Milan's high January target.
Mediaset says Milan chiefs have already struck personal terms over Tevez with Joorabchian within the last week and also have registered their interest in Mascherano.
Milan will request to bring the former Liverpool midfielder to Italy within the summer for €15 million.
The Rossoneri attempt to fund both deals by cashing in on Alexandre Pato. The striker's agent will be in Milan nowadays to debate the youngster's future with club administrators hoping to raise €40 million from his sale.
