It appears the Detroit Lions have added defensive tackle Corvey Irvin, who was released by the Carolina Panthers on Saturday. This is based on a tweet that Irvin sent out on Sunday night (his account is private, so below is a retweet from a Panthers writer at the Gaston Gazette).
Corvey Irvin to Detroit. RT @CJIrvin93: Ok, change of plans!!! It's been real Charlotte!! but I'm headed to Detroit. "what up doe"
Although many are assuming Irvin has been signed to the 53-man roster, I tend to think he was simply added to the practice squad. The Lions are set at defensive tackle with Ndamukong Suh, Corey Williams, Nick Fairley, Sammie Hill and Andre Fluellen, and Irvin is eligible for the practice squad.
Drafted in the third round in 2009 out of Georgia, Irvin has only played in two games in his NFL career. He spent the 2009 season on injured reserve and spent most of last season on the practice squad. This means he is eligible for the practice squad, and it also means that it's highly unlikely he is going to take the spot of one of the defensive tackles currently on the Lions roster. I suppose we shall see, though.