Rolando McClain was an Incredible physical specimen with combination of size (255 lbs) ..mobility, range and instincts.
At his best, he could physically stack up both the leading blocking FB and the RB in the same motion.
Was a solid interior blitzer, and could really bring a big wallop upon contact tackling, and he actually had a knack for dropping in pass lanes for jump INTs.
He didn't love football and being committed to it. Coasting in practice, not showing for practice, wouldn't practice thru minor nicks,
major substance issues with purple drinking, fines-suspensions, poorly conditioning,etc,
He just became a headache for teams he's been on,(Ravens, Raiders, Cowboys) and they wanted to do away with his distractions.