Summary
After being on the fringes of rosters his first two seasons in the league, Jones broke out in '18-'19 and became a regular part of the Heat's rotation over that season and the next. Jones fit in really well in Miami's system, as he was disruptive at the top of its 2-3 zone.

Jones adds most of his value on the defensive end, as he is long, athletic, and has enough quickness to stay in front of guards while having the ability to protect the rim in help-side situations as well. He is able to use his length and athleticism to get blocks, having a very good block rate for his career.

Jones has been an elite offensive rebounder for most of his career, finishing in the 85th percentile or better each season (for his position of either a wing or forward, per Cleaning the Glass).

Unfortunately for Jones, his offensive rebounding is one of the only good things you can say about his offense. He's a career 31% three point shooter, and hasn't shown much growth in that area in recent years. Jones just isn't a threat from outside, and that's one reason why he started to fall out of the rotation in the playoffs when the Heat made its Finals run, and has not been able to make a significant impact in Portland or Chicago.

I sometimes wonder if Jones would best be served as a small-ball center, but he's probably too thin to battle inside defensively on a consistent basis. The Bulls tried him at that position a little bit in '21-'22, but were unsuccessful in those minutes, particularly on the defensive end.

Jones is still only 25, so there is hope for improvement even if it's unlikely he makes any huge leaps in the coming years.
 
Cap Considerations
Jones will be an unrestricted free agent with an $12.6 million cap hold and Early Bird rights. Since the Bulls will most likely be operating over the salary cap, they will retain Jones's Early Bird rights until he is re-signed or signs elsewhere. The Bulls could offer Jones a starting salary of up to $17 million using the Early Bird exception, which will be more than enough should they wish to bring him back.

If Jones demands a starting salary of more than the full $10.3 million Non-Taxpayer Mid-Level Exception, only teams with cap space will be able to sign him (unless a sign-and-trade is completed), but it's likely that Jones could be had for the full MLE or less, and teams could potentially target him using the Taxpayer MLE, Room MLE, or even the Bi-Annual Exception.