I'd offer him 3-4 years at 500 with incentives to 750k but compo only takes into account the base salary so that probably only gets them band 2/3 and they probably match so there's the issue. Might need to offer over the odds to get them not to match.
Id call their bluff.. cause I'm not trading for him. He has given them an out by saying he is happy to stay ... thats leverage.