I would absolutely try and get LMA for the vet min lol he adds a scoring punch and reliable outside shooting that we sometimes need at the big position. Unfortunately, we have so many good bigs that I don’t see him wanting to come here because playing time would be erratic
The other team he's often linked with, Portland, also has a plethora of bigs (Nurkic, Kanter, Giles, and maybe Zach Collins for the postseason), so who knows what LMA wants.
The nice thing about being able to talk to the Spurs about a trade is it helps the Celtics gauge Aldridge's actual interest in joining the Celtics. If you really think he's going to come via a buyout, Ainge could make an aggressive move and trade both Theis and Thompson to clear playing time for Aldridge.