Hello, MK Dons fan here. This is a bit of an odd situation for us, as a club I've never seen us actually stand up firm ourselves against a player. We normally let them just go, and do what they want.
I can understand Robbo not wanting to sell to you, why sell to a promotional rival? I personally don't think KMF is worth £500,000 I think £350,000 ish would be a fairer price. Robinson called him the best CB in the league, I don't even think he's the best CB in our team. I believe Joe Walsh is much better, and younger. KMF isn't a championship player, more than decent in league one but he is prone to make mistakes and gets lots of suspensions.
I do find it a little odd hearing Sheffield United fans saying we don't have much bargaining power. Yes, the money for us would be good. But KMF still has 2 years left on his contract, it's not like we need to sell him now or he'll leave for a free soon.
Also, people keep saying we won't want to keep an unhappy player who we have to pay. Does anyone think he is actually getting paid at the moment? If he's not showing up he won't be getting paid, he'll be getting fined as Robbo said. So we have a player with 2 years left on his contract not getting paid...
At this point I just want him gone, he's killed off any chance of getting back in this team. What is strange, especially as he only recently signed a new contract and talked about how happy he was. He really hasn't done himself any favours.