It is interesting to me that the Bulls essentially got Nic Claxton for nothing other than the willingness to take on his contract, tells you that teams around the league must not see him as having much value. He has taken a pretty significant step back defensively recently.
In terms of big men the obvious targets are Myles Turner, Daniel Gafford, Wendell Carter Jr, Isaiah Stewart, Santi Aldama and Onyeku Okongwu in the MLE-->TPE price range.
Myles Turner may simply make too much money at 26.6 million to fit into the Celtics salary structure and he's also a little older than these other guys at 30.
Myles Turner (30)- 26.6, 27.9, 19.1
Wendell Carter Jr (27)- 18.1, 19.6, 21.0
Daniel Gafford (27)- 17.3, 18.1, 19.0
Santi Aldama (25)- 17.0, 17.0
Onyeka Okongwu (25)- 16.1, 16.9
Isaiah Stewart (25)- 15.0, 15.0