The Bulls announced Wednesday morning that Otto Porter (left foot sprain) underwent a repeat MRI on Tuesday that revealed bone bruising "not apparent" on his original MRI.

Porter originally sprained the foot in a 113-93 victory over the Hawks on Nov. 6. Head coach Jim Boylen has been hesitant to commit to a timetable for Porter's return ever since, at one point calling his return a "slow, meticulous process."

"He had a second scan, and something showed up that didn't show up on the first scan," Boylen said after Wednesday's shootaround. "That's tough, tough for him, feel bad for him. But we'll treat him and move on."

With the news that Porter's understudy, Chandler Hutchison, is inactive against the Pistons without a timetable for returning, Boylen will have to get creative with an especially strapped wing rotation.

Porter will continue his current treatment process and be reassesed by the team in two weeks.

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