Otah was the 19th overall pick. He was en route to Wofford College on Friday night and was expected be on the field for the first practice Saturday. Terms of the deal were not immediately available.
General manager Marty Hurney was negotiating with Stewart's agent Friday night. Coach John Fox said earlier in the day they were "fairly close" with both players.
Otah is expected to start at right tackle for Carolina, while Stewart will compete with DeAngelo Williams for the starting running back job.
Copyright 2008 by The Associated Press