He's 29 and while RB peak at 27 or 28 and he is on the statistical age downslope of his career he still could play at a high level. He got 4.3 YPC in a rotation and led in big plays for that Jets offense. I'm sure you're aware of the Geno Smith debacle. Stacked boxes and although Mangold and to a much lesser extent Ferguson are good, Colon and the rest were marginal talent. All three of our interior guys can iso at the poa all but the very elite DT like Watt, Cox, and Jergens. Smith wrecks smaller DE. Witten and Free do good jobs against DE as well. Most teams cannot get as much interference on the second level as we can. All those guys can move. I get that 2011 was a long time ago some people more than others but age 29 is about on the same level as age 25 or 26 even if its not like the peak statistically.
If DMC cannot go, I don't trust Dunbar and I would feel a heck of a lot better for a back to rotate Randle to keep them fresh. I think this guy is the best left on the scrapheap. Disclaimer: he was a pet cat when he came out.
