I am aware of that. However, there is no reason to think he wouldn't get that amount if he just stayed in control anyway. Arsenal, like I said, are poised to come back to the front row, due to FFP's impending arrival and the ensuing effects on PL spending. He can make that and more if he gives it a decade at the helm (creaming off the profits) before selling up,all the while lapping up the prestige that comes from being the owner of one of the supposed 'footballing elite' here in the UK.
Americans do not think like that. For them there is no prestige in owning an English football club, that is the mindset of Russians and Arabs. Americans are only interested in what they have always been interested in.........money and profits. Arsenal need big investment to match United and City, investment that Kroenke cannot provide up front. He is not a cash Billionaire in the way of Abramovich, Usmanov and the other Soviet types or Arab ruling elites, he is an asset Billionaire, in that what he owns together with his wife's Walmart wealth makes him worth Billions. He doesn't have immediate access to such sums in the way the others do. Being a cash billionaire and an asset billionaire are completely different.
This deal would give him an immediate £400m profit.