Holiday is the player they should go after. He is a point guard version of a weird Oubre/ Bridges combo.
If they can't get him, then go after cheaper options like Collison or even Rubio, and use Johnson as the third guard.
I want defenders who are not locker room issues.
This and then some.
However, forget the "if they can't get him" talk. James Jones needs to bring back the ghost of Colangelo and MAKE it happen. Short of trading Book/Ayton, go get 'em. Jrue is the PERFECT compliment to Book. He's a Defensive dynamo. He distributes well and can handle the ball. Plus, he's in his prime. Yes, we'd have to give up 2 of our 4 SFs (probably JJ and Warren) and our 2019 #1 (depending on it's location) plus some, but it's worth it. Our draft picks are essentially useless for the next few years (barring a #1 showing again).
Then we sign a middle of the line veteran PF who has a little nasty to him and disinterested in having the ball in his hands (there seem to be a good batch of those in FA this year). Thaddeus Young isn't going to blow anyone's socks off offensively, but what he does on D and everywhere in between would really help this team. Plus he can hit the 3. He would compliment Ayton who is more finesse. Plus, we could really use some veteran leadership.
Adding Jrue/Young to Book/Ayton and Oubre/Bridges would really solidify our team. We'd have crazy good talent, veteran leadership, defensive presence, and lose the McD curse of having too many players at one position.