After signing defensive tackles Corvey Irvin and Vaughn Martin earlier this offseason, it looked like the Detroit Lions were finally moving on from Andre Fluellen, who was an unrestricted free agent. The pair of signings gave the Lions more than enough depth at defensive tackle, and there really didn't seem to be a need to bring back Fluellen.
There still doesn't seem to be a need to bring back Fluellen, but it turns out that he has indeed returned to the Lions. He was re-signed by the Lions on Friday, according to Dave Birkett, meaning his fourth stint with the team is not over quite yet.
Fluellen was a third-round pick by the Lions in 2008, and his first stint in Detroit lasted through 2011. The Lions let him go before the 2012 season, however, and he spent a couple games with the Miami Dolphins. He then returned to the Lions later that season before briefly signing with the Chicago Bears the following offseason. That didn't last for long, though, and the Lions brought him back before again letting him go during the final round of cuts. He then returned a few weeks into the season and went on to have 3 tackles in 13 games.
The Lions now have Irvin, Martin and Fluellen competing for the fourth spot at defensive tackle. They also have Jimmy Saddler-McQueen and Xavier Proctor, who spent last season on the practice squad, so I think it's still safe to say that the Lions have more than enough depth at defensive tackle.