There is no reason for him to struggle, and if he does he needs to be held accountable. We cannot have one player single handedly costing us wins. The time for that is over, if he can't ger it done, you try someone else until you run out of options. Why? Because the result in itself would already be losing. Losing worse or better at this point doesn't make sense. Struggling with the amount of experience he has should be a one off type situation. He needs to be better, and it needs to be from game 1. End of story.