By Daniel Chavkin Williamson was rehabbing his foot in Portland under team supervision. View the original article to see embedded media. Zion Williamson is taking a positive step in his rehab from foot surgery. The Athletic’s Shams Charania reports Williamson is returning to New Orleans and is cleared to move forward with basketball activities. Williamson had been rehabbing his foot in Portland. Williamson hasn’t played this season after having surgery to repair a fractured right foot in the offseason. He was originally cleared for basketball activities on Nov. 26, but he suffered a setback in…