Biscuit I think the problem comes more from squad sizes. Coppell will want his most experienced, 'reliable' 11 out on the field, then he'll have his 5 subs, 1 of which is a keeper. That leaves four places on the bench, and at least one of those has to be one of the 4 strikers at the club. He'll then have a couple more choices to make, and I think he'll always pick a Convey, De La Cruz, Fae etc not because he necessarily thinks that they'll make an impression from the bench, but more to keep them happy and involved. What would Convey/De La Cruz think if Henry took their place in the team? Egos are important at this level, and I think that's where Coppell has problems and won't take risks.
I think it simpler than that. Is Henry better than what we have on the bench? None of us have seen anything to say he is and Coppell doesn't think so and to be honest he's prob right.