The deal Hitler repeatedly offered and the UK just as repeatedly rejected? Cutting a deal required both sides to agree, and the UK wasn't agreeing.
While true, he should have offered to take the City of London's leadership off the Crown's hands. Because everyone forget most of WW2 was about Debt Financing. Or the most brilliant economic plan in history: lie about your debt to the point it's 2-3 times higher. Germans and they're money printers, they just can't quit them.
There's some jokes in there about the consistent hatred & callbacks to the National Socialist regime has less to do with Communists or killing a lot of people, and far more to do with completely breaking the International Finance System to the point it took basically 3 separate cycles post-WW2 to get it back in some sort of order.