Not officially signed yet
$3,033,500 is the rookie scale salary for the 13th pick in 2020-2021. We can pay him 80-120% of that figure. I'm guessing his cap hold ($3,640,200) is 120% of that figure without crunching the numbers, so we could pay him the whole 120% without going into tax.
I'm not sure what the deal with years or raises y/y is in terms of Kira specifically. This is as good a guide as any
https://basketball.realgm.com/nba/info/rookie_scale
Not sure why there's a hold up, but plenty of 1st round guys haven't been signed yet, including Edwards.
Cap gurus, please call me out if any of this is incorrect, I'm not quite sure how to interpret this next bit:
Maybe it means cap holds don't count towards Luxury Tax until said cap hold is crystalised into an actual contract.