I'm not sweating Livings being out a couple of weeks... And you know why?
Because Leary is going to get (and is getting) every opportunity to win that spot.
It's still early but an offensive line of: Smith, Leary, Frederick, Arkin/Bern and Free isn't unrealistic.
That being the case, Costa, Parnell and whoever loses the Arkin/Bern battle will be the main backups.
That leaves Kowalski, Livings, Cook battling for one and maybe two spots.
Bottom line I don't think it matters much about Livings and his knee.