The Spurs are asking for two first-round picks for Poeltl, but that might be a tad high. Instead, the Hawks send over 22-year-old backup center Onyeka Okongwu and a future pick from Sacramento. The Kings are looking good this year, but with their turbulent history, it's hard to reasonably predict if they'll be any good next season, so this pick could convey as a middle-first rounder.
Justin Holiday is a 33 year old backup guard who probobly would get bought out, or rarely play for the Silver and Black. After extending Trae Young, the Hawks don't have a lot of cap space, so salary fillers would need to be thrown into the mix.
Simply put, Capella is washed. Poeltl is not. Are picks more important than the big man in San Antonio? That is the million-dollar question, and if the answer is yes, then what on earth could the Spurs do with Capella? I don’t know; putting him on a river barge as an honorary captain for riverwalk tours might work. Taking Clint off the Hawk's hands is more of a favor in order to secure draft slots than it is for him as a player in this trade scenario.
This trade does meet the reported asking price the Spurs have set for Poeltl, and they would have to take a bad salary back, but that's the price you pay for two picks. The Kings' draft pick could again fall pretty much anywhere, and the uncertainty of the Hawks come 2029 makes this distant selection rather appealing.