To be honest I expect N. Quintana to lose the Tour tomorrow. His third crash was quite nasty.
I think Nairo has marked this stage at the begining, but with the crash on friday his chances for tomorrow are done is my guess.
He will try to hang as much as he can and try to limit his loses, and probably try to heal for tuesday-wednesday-thursday.
The other thing with his team is, they will let him attack no matter what, or they are just good enough with a top 5-10. Because i think Arkea in a top 10 is really good for them, and the chance to loose everything is big if Nairo decides to attack and loose.
If he decides to attack, the best thing is Dayer, Barguil and Winner to put a hard tempo in the first mountain, why??? because if they let TJV do the job, at least winer and dayer wont get to colombier with the GC group. so better is to burn matches when you have them. try to isolate the more GC contender as posible, and then is mano a mano from the second mountain to the finish.
My guess, Nairo is not good for the crash, he will not atack and the team will try to save energy for the final week.
My fear, Nairo cant hang with the GC group in the first or second mountain and loose all.
My hope, what i describe before and nuclear attack in the second mountain, ally with someone to cover the valley, and get a lot of time.