Getting both Gardner and Lawrence makes Mincey completely expendable.
If he's on this roster when the season starts then things have gone sour.
Did you review game footage of Mincey?
I reviewed him from 2012 on the all-22. He looked like a legit NFL player. They had him primarily at RDE with some snaps at DT in the Nickel. He is a powerful player with decent quickness. He would be best as a LDE or as a RDE on base downs that can play DT in the Nickel.
I don't know exactly what happened in 2013. He was late for meetings a few times and the HC decided to make an example of him and he was cut. He went to Denver near the end of the season.
Unless he is just completely out of shape, he should be an upgrade from most of the street FAs from late season. I'm all for going with as many young players as possible, but if a young guy does not beat out Mincey it doesn't indicate doom. It's difficult to implement a defensive scheme with all super young players. A few inexpensive veterans is not a problem.