If they can get any sort of decent return, which is questionable, then I'd pull the trigger but If I'm running Dallas of the PG's they've got now he'd be the one I'd look to bring back as a vet backup next year...
It's really strange. Is Cuban that stubborn? Can't he take 1 year off to tank and get a future PG?
It must be the kind of person/businessman that he is. He won't even take a 1 year setback to go forward 3-4 steps. Personally I don't think it's good business.
GSW owners did it right when the tanked to get Harrison Barnes (at our expense), and re-set that year. Barnes wasn't pivotal but he provided an injection of talent that catapulted them to where they are today.