Taj Gibson missed 20 regular season games last year due to ankle injuries, and had surgery in June to correct the issue.
Evidently, things were fairly severe.
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Gibson is ahead of schedule on his rehab, participating in one-on-one drills when a timetable for a full return to basketball activities was initially set for mid-October. He'd like to make it back for the start of training camp, but obviously, the Bulls aren't going to be in any rush.