I think K Mac is the worst realistic appointment we could make.
1-0, backs to the wall, wave upon wave of Everton pressure and he doesn't use his spare 2 subs to break up the game and waste a bit of time. Unsporting yes, but Fergie would have used them, but not before asking them go and play out on the left wing first as to waste as much time coming off as possible.
By all accounts Mac is a nice guy, and in the big bad world of Premier League football, nice guys finish last. See Southgate, Shearer, Spragia etc.