I have 100% working method to easily (ok, it's easy for ultra-pro managers, like me) beat Mourinho. So you should:
1) Have a bad season
2) Have zero training bonus
3) Have not very great team
4) Join the match not earlier then 0:41.
Mou team:
And the result is not bad - 7:0.
Easy.
Pro-tip:
Spoiler
Just don't care. This game is made of 100% bull****.