The Brazilian was at the heart of our dramatic quarter-final second leg comeback against Lyon in mid-April, earning a penalty and then setting up both Kobbie Mainoo and Harry Maguire in the 5-4 extra-time win.
He then netted our opening goal in a fantastic 3-0 away victory at Athletic Club in the semi-final first leg.
This comes after a spell out of the team in the autumn, when head coach Ruben Amorim had first taken charge.
Previewing the semi-final second leg for United Review, Casemiro went through his thinking.
“I have won what I have won,” the five-time Champions League-winner told our official matchday programme.