For the 1651648th time, hell no. He would require a HUGE contract, but dude is 1 failed drug test away from a year suspension. Not to mention the nonsense he pulled the week after his last suspension was announced. He's talented on the field, but can he stay on it? Now signing him as a UFA to a cheap deal, sure, but trading any assets for him is a terrible idea.
He's not that old, especially for a D-lineman. We cut/didn't resign old, over the hill, expensive players. Langford is none of those. Before his injury, he was an absolute animal. If him and Anderson get back to their 2015 level, our d-line will be stacked.