he's 30 but he he came in at a young age. He's always put into a box as being just an above average rotational guy, but he's so much more then that IMO, he's the blood of the D, he's the heart, yes AD is THE guy and the muscle, Jalen is the top notch professional, MB is the heart, the stabilizer.
They can go without him for sure, but they will not be the same without him, there would be a noticeable difference in the team play IMO. The run game would drop off. IF he goes Robinson better be A+ good to go, he'll have some shoes to fill.