Dave Gettleman’s latest bargain-bin signing is another offensive tackle with a recognizable name. And, as Gary Davenport writes for Bleacher Report, another OT that was mediocre at best last year:

Yes, the circumstances surrounding the first two years of Martin’s career were hardly ideal, and that can’t make it easy for a young player to acclimate to the NFL.

However, Martin wasn’t in Miami last year. He was among arguably the most veteran, professional O-line in the NFL, playing under the coach for whom Martin had the best years of his playing career.

And he was still a turnstile.

Maybe it’s time that turnstile just stopped spinning. And maybe it’s time we just came to grips with a rather depressing realization.

For all his collegiate accolades, and all his promise, when it comes to protecting an NFL quarterback—Jonathan Martin just isn’t very good.

Maybe Martin figures things out this year. Maybe not. It’s a reasonable enough signing by Gettlemen but at the same time, this doesn’t make me feel much better about the Panthers’ prospects for 2015.