Guys this young in their career I don't think you worry about a simple ACL tear endangering them to the point you worry they'll ever return to pre-injury form.
I'd be more concerned about his game and having him improve the issues he has. I've talked before about his tendency to get shoe-stringed, tendency to stop his feet on contact at times (though that got markedly better with experience as the year went on). Has almost no instincts/competency in the passing game either blocking or catching. Those would be the things to worry about, not so much the injury IMO. Considering how gruesome the hit looked on replay, he was walking all around the sidelines with no help saying goodbye to everyone. I think he's a tough guy.
Once he recovers from the injury I'm pairing him up with Lamar Miller as my tandem at the position long term, so long as Miller toughens up a little bit and proves up to the task. I think those two make a great pair, just as Cierre Wood and Jonas Gray made a great pair this year for the Irish. It's thunder and lightning, but with a yin yang twist. That thunder's got plenty of lightning in the tank and that lightning has a surprising amount of thunder at times, and both are awash in patience for letting holes develop.