Dotson injured his left knee during the first preseason game in August. The lineman, who has started 49 of 70 career games, began his 21-day practice period on Oct. 20.
Jennings signed with Tampa Bay as a free agent on Sept. 7 after spending his first nine seasons with the Indianapolis Colts and Chicago Bears. He started three of his six games with the Bucs, making 17 tackles.
The Bucs announced the moves Monday.
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