Nine years ago, at exactly the same stage of the Champions League, Mourinho came to Old Trafford for a second-leg tie and ended up charging down the touchline in delight at a last-minute Costinha goal that sent FC Porto through.
Mourinho insists nothing much has changed since that day in 2004 when he announced himself to the English game.
"It means the same," he said.
"I look at the situation with different emotions and the approach is completely different.
"That match was my first season in the Champions League. Now I have more than 100 matches and I can control my emotions in a different way.
"If I lose tomorrow I don't cry. If I win, I don't run 100 metres.
"But the happiness and sadness will be the same; whether I am sleeping well or not, whether I laugh a lot on the plane or pretend I am asleep.
"That is the same story."