He will fool nobody with his excuses.
The damage has long been done and he will only make people laugh at his childish remarks.
He,and his ‘aides’ with all their know how and print outs and intelligence and legend status, should have been smarter in his/their substitutions which were the real killers and not the officials. You do not bring Herrera for Mata with around 2 mins left,when everyone could see that Mata had long gone,and hate Felliani as much as you want,but to bring Memphis for him was foolhardy and naive.
While Chelsea was getting defenders off and adding forwards,United were bringing on attackers instead of extra defenders giving Chelsea the impetus and control for their late rush of blood.
Above all he or his designated successor should have gotten up from their benches and made their presence noticed as a support to their team which was under the cosh for the last 5 mins or so ala SAF.
And not for the first time,what a gem of a keeper. Hats off David.