The Bulls eye Isaiah Hartenstein as Nikola Vucevic’s potential replacement, betting on defense, rim protection and playmaking to suit Billy Donovan’s uptempo style. Vucevic’s expiring $21.5 million deal and steady production come with defensive gaps Chicago may not want long-term. Hartenstein’s size, mobility and passing could fit Chicago’s future.

Hartenstein, 7 feet, posted 11.2 points, 10.7 rebounds and 3.8 assists last season, plus strong defense. His $28.5 million club option for 2026-27 and OKC’s evolving roster with Holmgren could influence availability. A Bulls pursuit would hinge on cost and fit, signaling a shift toward defense and flexibility over pure scoring punch.

The move would require Chicago to shore up perimeter defense and shooting to maximize Hartenstein’s value, aligning the frontcourt with a faster, more switchable roster.