Lions sign Greg Hickman, release Corvey Irvin

Following their rookie minicamp over the weekend, the Detroit Lions decided to sign one tryout player: Florida International defensive tackle Greg Hickman. To make room for Hickman, the Lions released defensive tackle Corvey Irvin on Monday.

Irvin joined the Lions back in March, and it was actually his second stint with the team. Previously, Irvin spent about a month on the Lions' practice squad back in 2011. He returned earlier this offseason as extra depth at defensive tackle, but the Lions swapped him out on Monday to get a bit younger at the position.

Hickman joins the Lions as an undrafted free agent out of FIU. He wasn't a part of the initial wave of undrafted free agent signings, and he was only at the Lions' rookie minicamp on a tryout basis as a result. Clearly, the Lions liked what they saw out of Hickman during the minicamp, as he is now under contract.

Given all of the depth the Lions have at defensive tackle, it's unlikely that Hickman will be in the mix to make the 53-man roster. However, I suppose he could always contend for a spot on the practice squad.