On Tuesday, there was a report that the Detroit Lions were planning to re-sign tight end Kellen Davis. That move may still be coming, but there were only two moves involving the Lions on the NFL's official transactions report, and neither involved Davis.
The first move involved fullback Montell Owens, who was released from injured reserve. Owens landed on IR earlier this season after appearing in only three games for the Lions. This came after he made only a single appearance last year in between stints on IR. He just couldn't stay healthy with the Lions, and he is now a free agent.
The other move involved the Lions' practice squad. Specifically, the Lions released linebacker Jerrell Harris from it. It wasn't clear at the time why they opened up a spot on the practice squad, but now they have two vacancies with safety Jerome Couplin being signed by the Philadelphia Eagles on Wednesday.
Couplin made eight appearances for the Lions earlier in the season and also had a brief stint with the Buffalo Bills. He returned to the Lions as a member of their practice squad after being let go by the Bills, but now he's off to Philadelphia. If he becomes available again, I'm sure the Lions will look to add him back to their practice squad, but I suppose it's possible that this could be the end of his time in Detroit, at least for 2014.