This is really bad. High ankle sprains will take a long time to heal back to 100%. For Thomas who cuts and change directions as violently as he does, I really hope this doesn’t become a season long issue.
It might be more mid ankle, than high--IF he is in fact thinking he can play through it.
Still, not cool...I hope we just put him on ice for 2-4 weeks and weather the storm. These kind of injuries linger. Saquon made it back in 4 weeks last year and wasn't the same player until the end of the year.