I honestly don't know who should be the favourite here and I consider it a 50/50 fight. On one hand, Usyk did win the first one fair and square, but it was a really close one, and if it wasn't for that knockdown (or standing count) who knows what the result would be.
Tyson seems to have his mind in the right place before the rematch. He's more collected and composed than before the first fight when he was acting a bit off at times.
Given that I give each 50% to win, if I had to bet, I'd bet on Fury, simply because the odds are better.
But instead of betting on the winner, I might be tempted to bet that the fight won't go the distance:

I think Fury will be keen on taking more risk, which will either pay off or he will get punished.