Strange one this - I see the Liverpool based local press are till saying deal on, but the general tone of the Sunderland press is now deal off. I would be very surprised to see him sold now, but who knows if the money goes up. I'd also think it would be very hard for us to reject a bid of 20m+ for a player with a total of 16 Premier League games to his name. All that being said, I like him (albeit Kaboul is the better of the two, now that he's fit) and would be happy if he stayed. The two of them seem to have struck up a partnership and have looked very solid since March.
Reading between the lines, this does strike me as a case of his agent pushing his luck too far in trying to leverage EFC's interest to get a better contract for Kone at SAFC. Kone has said throughout that he wants to stay at Sunderland, but that he expected a new contract offer. Moyes confirmed on Friday that he would be offered a contract after the transfer window shuts; and judging by (i) Kone's performance on Saturday; and (ii) his subsequent denial that he knew about the "transfer request", it would appear that he has accepted that.
I don't think the club are being unreasonable in asking him to wait until 1 September - we need at least four or five players in over the next fortnight and the Manager/Chief Exec have both only been in their jobs for three weeks. Offering an improved contract to a player who is already tied to SAFC until 2020 is simply not our priority at the moment.