I think eras have changed and in this era of Erik ten Hag I'm sure Manchester United will be able to play well, even though Barcelona might eventually win but this match will still be interesting to look forward to. Also, regarding the players or squad that Barcelona have, basically they already have players who have good quality, so even if one key player is injured and or cannot be played, of course Xavi will be able to use other strategies by adjusting the available players.
So yes, this match will of course still be interesting but one thing I still believe in, it looks like Erik ten Hag will be able to make the right strategy in this match to make Manchester United qualify for the next round.
He could definitely become the next manager of United that could go on for a long time, I know that it is not going to be easy and it is going to take a while before he could be considered that level yet, but I think Erik Tan Hag has that potential to be a great manager that can stay for at least 5 years.
He is not at a level of Sir Alex Ferguson obviously, maybe he could be in the future, but he has been around just half a year, but he has shown a lot more promise than Ole at least, and Ole stayed for a long time too, which means that if he is given the same amount of transfer budget, that dude could be better and stay for 5+ years, giving them maybe even a title along the way.