He believes the savaging his skipper received in the wake of England's 1-0 win over Slovakia this month was the tipping point.
Mourinho said: “Honestly. I think there was a Wayne before the Slovakia-England and a Wayne after the Slovakia-England. And I am not blaming Sam [Allardyce], not at all.
“I am blaming the people that after the England-Slovakia was, in my opinion, too strong with somebody that is a very important player in the history of English football, is the captain of England, is the record of goals, is almost the record of matches.
“I think it was too much but I still think, a big boy like he is, he has to face it in a strong way."