I'd rather keep Marcus, mentioned adding his brother and Thomas, or a Rubio and Bertans works too. Man, think of how angry the Spurs would be if we got Bertans, lol.
This team needs a consistent PG, to thin out the PFs to someone more consistent. Barrett needs to plan smarter, heck if this team was better, he could use some g-league time with Knox and Iggy (all SFs).
Robinson has been better of late with foul woes, an improvement, but I don't think he has the bounce he did before he got banged up. There is no true Center behind him depth-wise. We don't need both Gibson and Portis behind Randle, one can go. Frank is a defensive energy off the bench type, I don't see much of an improvement ceiling for him.
Ellington a waste, like Novac who couldn't create his own shot too well, but at least Novocain hit his open 3s consistently. Dotson and when healthy (if not an excuse to keep him in the doghouse) Trier need minutes.
Marcus has been awesome most days, Randle is playing better with spacing and a PG Paton who spreads the floor. Not sure what Allen can offer since he never plays. DSJ needs to go. Those are the facts as I seem them.