I don't think Rangnick was talking just about Rashford. There were experienced players out there playing like the football was a grenade in the first half.
Elanga at least never looked like his first touch, short passing or decision making had gone down the tubes. He played the game in front of him not the occasion and I think, besides Ronaldo, every single player who started for us can learn from Elanga's approach to the tie.
Yeah, you can see why he tinkered with it and he deserves some recognition for switching things up when things went south.
He knows that this team lacks conviction and gets shaken at the first sign of trouble. I get that, even though its tough as a fan to watch. This season our squad had a once in a 100 years lost to Liverpool. That's not the kinda thing you wake up the next day and shake off. The confidence is brittle and it IS partly Rangnick's job to fix it.
However, if its not possible, then you gotta bring in players who haven't been scarred by the bad times we've had this season like Elanga. Unless a lot of the current set can 'get over it' they might not have a future at Man Utd. That's becoming more and more clear.