Mbappe just signed a 3 year contract worth $633 million. If there was no salary cap in NBA what do you think highest contracts would go for?

So Mbappe's contract was until this year, he was about to leave to Real Madrid until PSG came down with this monstrous offer. He is getting a sign on fee of 158 million USD and then he's getting paid more than 2 million USD per WEEK.

If NBA had no salary cap who do you think would have the highest contract and how much do you think they would earn per year?

EDIT: My figure in title is post-tax, his contract is actually worth over $1 billion pre-tax (same as contracts in NBA are reported)