If Thuybulle is available for an expiring and some seconds you go and get him, no questions asked. He is exactly the type of guy this team needs. First off, I am not super worried about his offense. He has always played in Philly, off of Embiid, in a system where you stand in the corner and wait for a three ball. With Harden, it is worse. There is no movement on the offense at all. I think he would do much better in a Sabonis offense. Thuybulle has shown the ability and willingness to cut, and has been a decent finisher in the paint. He is certainly not feared from the outside, but he is a career 33% 3Pt shooter, and was 35% as a rookie before his confidence was sunk. I think if you played him with Sabonis he could be an interesting cutter/corner three shooter. He would definitely be you fifth option, but I think there is some upside.
If you get him, he is the perfect piece for the ninth rotation spot this year. Let him play 12-18 minutes off the bench as a stopper, and let him play a good amount of those minutes in a Sabonis, Keegan/Barnes, Thuybulle frontcourt. I think he would be fine. You could go nine deep with the starters, Lyles, Monk, Mitchell, and Thuybulle. Your defense is immediately better.
Long term, if he pans out, his perfect role is the role that Brown envisioned for Okpala this year. If you resign Barnes, then let Thuybulle start with Sabonis, Keegan. Huerter, and Fox. There is plenty of offense and shooting, and great space to play as a cutter. Plus, Thuybulle gives you the defensive edge as a starting unit and allows you to stagger he and Davion so that one of them is on the floor all the time. I still think he would only play 16 minutes or so a game, but he would play the first 8 of each half (and then maybe in crunch time if you needed a stop). A bench of Barnes, Monk, Mitchell, and Lyles would have a lot of firepower and grit.
Long term, you re-sign Barnes, and draft another wing, and this lineup looks pretty good, with these guys all under contract and the chance to add in free agency.
Sabonis/Lyles/Holmes/Queta
Keegan/Barnes
Thuybulle/Barnes/2023 FRP
Huerter/Monk
Fox/Mitchell