Bulls forward Nikola Mirotic underwent a hematoma removal over the weekend and is now without a timetable to return, per a team press release.
Mirotic underwent an appendectomy last Wednesday. Mirotic is currently resting at Rush University Medical Center and will be released within the next few days.
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Mirotic originally was expected to return after the All-Star break from the appendectomy. But following his latest procedure, the Bulls now say "a date for his return will be re-assessed as he continues to recover.