If Towns did demand a trade and the Suns would include Ayton in a deal for him, I'm not sure what other team could beat the Suns offer if it was Ayton and expirings for Towns. So if it happened at the deadline this year, Ayton and Tyler Johnson for KAT. From a talent standpoint we would be able to offer the best return because no other team with a rising star that is better than Ayton will offer them for Towns.
There aren't many that fit that category anyway and Dallas isn't trading Doncic, Atlanta wouldn't trade Trae Young, Sacramento is dumb so no one could be sure what they would do but I think it's unlikely they would trade Fox. New Orleans isn't trading Zion. So who beats Ayton in return?
I think Minnesota might try to dump salary with Towns if they dealt him and if that's the case then the Suns would have some competition because then you're talking about including Wiggins or Dieng. Dieng is due $17 million next year and then expires so it's not super ugly but Wiggins is owed $29.5 next year, $31.5 the following, and $33.6 in his last year. Who wants to owe Wiggins $95 million over the next 3 seasons?