Assuming Ollie is managing an injury, why didn't Tammy come on earlier v Bournemouth? I get why he played against Brighton, good record against them and he probably wants Tammy fresh for Newcastle.
Also do we know when this injury took place? The narrative seems to be that he had it last year too, but wasn't there talk in the summer that he felt much sharper and better having had a good pre-season? When he started the season badly it looked more to me like a mental issue, as if he was disappointed to still be here. It's all a bit strange, if I remember correctly the first mention of an injury came from Tuchel.