Suns CAN NOT waive and stretch Bradley Beal next year because the dead salary can't be more than 15% of the cap salary.
That 15% for next year will be around $23M.
Waiving and stretching Beal: $22M BUT we have already dead money on Nassir Little ($3.1M) and E.J. Liddell ($0.7M). That would make it $25.8M in dead salary, so it's not allowed by the rules.
https://www.reddit.com/r/suns/comments/1jlria8/the_suns_will_not_be_allowed_to_waive_and_stretch/