The Lions have signed running back Rudi Johnson to a one-year contract despite earlier reports that a deal wasn't imminent. The signing won't become official until tomorrow as the contract was signed after NFL offices closed. That means the Lions probably won't announce the move until tomorrow, meaning for now we don't know who Johnson is replacing. However, all signs point to Tatum Bell being the odd man out.
UPDATE (9:02 p.m.): Pro Football Talk is reporting that Tatum Bell has indeed been cut to make room on the roster for Johnson.