The team announced confirmed the news on Oct. 5:
X-ray's confirm Portland G CJ McCollum sustained a fractured 5th metatarsal bone in his left foot at practice on Saturday at the PF.— Trail Blazers PR (@TrailBlazersPR) October 5, 2013
McCollum underwent successful surgery on Oct. 16.
Updates from Wednesday, Jan. 8
Anne M. Peterson reports that McCollum has taken the floor for the Trail Blazers:
CJ McCollum makes his NBA debut, gets an ovation. Nice welcome for the rookie— Anne M. Peterson (@AnnieMPeterson) January 9, 2014