Under normal circumstance I would say Jrue however he was publicly contemplating retirement 5-6 months ago. He seemed to be walking that back recently though. He can also opt out of his contract next summer so is basically a rental. I wouldn't mind him at all, it would also help to consolidate this roster, but not keen about giving up 2 FRP's which is what the Blazers apparently want. It would also be a huge step back at his age to go from a legit contender to playing for a rebuilding Jazz team.
My concern with Herro is that he is another volume shooter. The Jazz will be basically bringing back their squad from last season so how would they find enough shots for both Collins and Herro who are both volume shooters? These guys are not Vandy, KO, Conley types that don't need to launch shots to be effective. Consider that Clarkson will probably be in the starting unit too. My guess is Lauri would be the one to sacrifice shots playing alongside Herro, Collins, and JC which is no bueno.