Outside of Curry, Green, and Russell they lack real NBA talent. Seriously, look at their roster. They're incredibly thin. I wouldn't swap last year's Suns with who they have outside of Curry, Russell, and Russell even if we would keep Ayton, Booker, Bridges, and Oubre.
Looney is probably the only guy who might be a rotation player somewhere else but that's it. They can't even make a starting 5 with who they have right now.
Here's a look at their roster and how many minutes they played....
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I'm only familiar with Chriss, Spellman, Robinson, and Looney.