Though not precisely "who's next?", the following certainly plays:
1). there are folks who seem to welcome news like "Tate Nichols has more physical problems", and may be through. [that last bit being very speculative, based on no knowledge]. Hey, wow, another scholarship! Well, let's think about how much of a Hey Wow that is.
2). Who, other than incoming freshmen do we have for the O-Line next season? There is Christian Lombard, and.... no other obvious returning starters. Then there is Matt Hegarty for center. Maybe let's put Ronnie Stanley in at one of the tackles. And OMG do we need Chris Watt and Zach Martin back!
Let's say, though, that Watt stays but ZMart goes. Then NMart has to replace his brother, or for some other array, the O-Line becomes Stanley/ Watt/ Hegarty/ NMart/ Lombard [or some mix].
O-Lines usually need at a minimum two [and that's really pushing it] or three ready-to-play back-ups. No Nichols/ Prestwood/ Carrico. Our only back-ups then are Harrell
, Hanratty [Guard], Heggie [Center/Guard]. And the frosh, which no coach in his right mind wants to waste a year of eligibility at this stage unless desperate-plus. NO TACKLES without internal shifting of the starters --- usually not an optimal in-season idea.
So, losing Nichols on top of the other guys is NOT a big winner in any evaluation of realtime 2013 optimization.
3). This is just another episode in the constant wrong-headed "enthusiasm" which goes on in this board about getting another fancy flyboy other than a lineman. Though not precisely identical, replacing Nichols with a DB or WR or RB reduces to exactly that. I am really hoping that the big man makes it fully back to functional lineplay, and there is no need next season to either juggle the line mid-season or burn a frosh year of eligibility. If Zach comes back this will [barring more than one injury or sickness] solve this problem, but, alas, we can't count on our super LT turning the pros down, with a degree in hand.