Carroll is still around. I wouldn't exactly call him a three anymore, though. I could see the Nets considering Pau and the Toronto pick for Demarre and a second. Getting out of Gasol's last year would be nice, and there's not a ton of downside in terms of their pick. Even if they get something like the Indy pick (reverse-protected until 2023), they may only give up two potentially worse seconds. Hopefully, it would be the NYK pick.
I wouldn't be completely against a Gasol/Deng swap if LAL compensated SA properly for the savings. Maybe something like Gasol for Deng, the rights to Bonga and their first this year. SA has no need for cap space next summer, and get can keep collecting assets for a rebuild while they still try to contend. Deng may be completely finished, and if he is, then he probably doesn't make sense. But if he can get back to form from before his LAL days, he could fill out the forward depth.
I still like Harris and would have no issue with SAS being aggressive and trying to turn Pau into Harris and another player like Montrezl Harrell (S&T obviously). There's an argument to be made against getting another guy who needs touches inside the arc, but he would add the scoring punch that we are hoping Gay somehow provides going forward. On the cheaper side, the Spurs might be able to trade Manu's deal and some seconds for Sam Dekker. Dude has legit forward size but just hasn't put it together.
Paul Zipser is still a free agent? Another flame-out, but with Poeltl on the roster, I could see SA bringing him in for camp. I see no reason to not burn the Blossomgame card at this point. The team has enough of the MLE to give him a four-year deal, which would take him deep into his physical prime. Had KBD fallen to them (which still hurts), then having him on such a deal would have been amazing. Jaron doesn't seem to have that in him, but you never know what can happen with time. I also think Brandon Paul has a legit chance to sticking around. He should be better in his second season with the club. , he started off really well on both ends before something derailed it. I'm not against giving him another chance. I just wish his guarantee date wasn't until after camp.