I see no 'genuine' negotiation with Raiola for a contract extension to take place until at least Oct 5 when the window closes.
Raiola is acutely aware Milan will feel the pressure from October and until late-December, as that's when he and Gigio can sign a pre-contract with any club in Europe. They will all be in queue to pay up, perhaps even more than Milan could pay.
& at this point, I wouldn't mind seeing us caving in to Raiola's demands, because we have put ourselves in this position and we cannot lose a world-class goalkeeper on a free transfer.