See the 2nd part of my post:
If you assume an injury to any part of the team, the front line is the least impacted.
Costa: Well you have Batshuayi, or Hazard
If Hazard, Pedro, or Willian are hurt: The other two can play
If Kante or Matic go down, you have Fabregas, who is unsuitable for a 2 man midfield and will get runover by a good team, and then nothing.
If Moses gets hurt, you have nothing. If Alonso gets hurt, you have nothing.
If one of your CBs get hurt, you have nothing...except John Terry, and he is way too slow given the mobility required of your side centrebacks, and the limitation of his skillset required for the central role.
Before they look at James, they should look at recruiting another midfielder, another CB, another right wingback, another left wingback. As I said, James role is literally the least important to fortify right now.
So before they go and buy a 2nd steak at that expensive restaurant, they should worry about buying some vegetables, a beverage, a carbohydrate, and even dessert because having too much meat and nothing else leaves a hole in your pocket and lacking a balanced diet