Half decent performances from AOC and Gini would help too
In the context of Sunday's game, it would have made a huge difference. Having controlled the midfield in the first half and seen it gradually slip away (not least because of Henderson, who had been excellent, suddenly getting very leggy), we were perfectly poised to bring on two energetic, intelligent midfielders to renew our control.
Instead we got two seemingly disinterested, mediocre and knackered subs. Awful in particular from Chamberlain who seemed either demotivated or overawed - either is worrying.