In the case of 
"There are a couple things that we look for in a safety and Glover hits all of those," Schwartz said. "He's a guy that played corner in college. I remember looking at him when he came out of New Mexico and as physical as he played, the first thing that came to mind is: this is a guy that can make the move to safety.
"He can play nickel, he's played dime in the box, he's blitzed, he plays in the deep part of the field, he's asked to cover man-to-man. He's a very good fit for what we do in addition to being a very good leader."
The Lions have been on the lookout for a cover safety who could solidify the back end of their secondary. A cornerback his first two seasons in the league after the Texans drafted him in the fourth round out of New Mexico, Quin was moved to safety in 2011 and has flourished ever since.
The Lions could certainly use a player of his talents in the backend of their defense after giving up 13 plays of 40-plus yards in the passing game last year.
With
"I think playing cornerback my first two years helped me in the coverage aspect of the position," Quin told Detroitlions.com. "Playing corner for two years in the NFL is tough duty.
"I've always been a guy that liked to tackle and been a physical guy, and so when you go and play safety with a coverage background as a corner, it helps you because you're going up against different athletes as far as running backs and tight ends and so you can use that to your advantage and that helped me out a lot."
Quin, 27, started every game the last three seasons with 246 tackles and five interceptions. He's only missed one game over a four-year career.
"In this league, it's all about if you can play on Sundays," Quin said of his durability. "I mean, it doesn't really matter how good you are if you're not able to go out there and play on Sundays and play at a high level. So, obviously being healthy and being able to play for as many games and not missing games, obviously that plays a part in a team's decision and investing in you."
Quin is reliable, which is something the Lions have struggled with for years. Starters
Quin is a player who can man up in the slot and cover some of the league's best tight ends and running backs and also take away the deep portion of the field.
Ideally, the Lions would like to pair Glover with Delmas, who's an unrestricted free agent. The Lions are still trying to re-sign Delmas, but they have now - with the signing of Quin - added a significant piece to getting better in their secondary.
