That might be true, but the Celtics had players at the 5 who could shoot threes the last time Bjelica was a free agent. Theis can hit an occasional three, but he's not the same kind of shooter as Bjelica. Whether it's Bjelica or another similar player, I think the Celtics would benefit from a proper stretch 5 to give them some lineup versatility.
Bjelica would be an excellent bench piece (at the 4) and I would ship Kanter/more for him. He reminds me of Mirotic, who I always liked. Brad has wisely tried to hide Kanter's defense with the 2nd unit but not sure that even works. Teams hunt Enis out on the pick n roll, he's a super "good dude", but I like how the C's play with a defense-first 5.
While spindly, I'd like to see Celtics kick the tires on Nerlens Noel as a super cheap, defense-first 5, rim protector. He's not strong enough to guard Embiid solo. BUT the C's will have 2-3 players in the lane to slow JoJo & Co down since the 76ers have no quick perimeter threats.
A revolving/fresh Theis-TL-Noel, defense-first 5s could run a lot of big/bulky centers into the ground and add to the C's transition offense
So adding Bjelica/Noel would be an excellent upgrade, while not interfering with the development of Brown and Tatum's offense or the return of Utah Hayward. While retaining fiscal/cap responsibility.
This really seems like “guy who had a good game against us” overreaction syndrome.
If Sac fades, I believe Bjelica's shooting/size/contract has him on a lot of contenders radars, regardless of how he played recently
Not sure what it would take to attain Bjelica. BUT the C's have a plethora of developing young players besides Tatum/Brown (Waters, Romeo, Grant, Edwards, Tacko). Stapling one of our late 2020 first-rounders to switch out a defensive negative (Kanter) for multi-year positive (Bjelica) isn't the worst idea to contending the next 2 seasons
YMMV on your thoughts of that upgrade and if you think the Celtics are contenders this season