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.
Just few months and few good results are not good enough for having any long term prediction about any manager or player because things can change drastically, and we can face any dilemma for any player and manager even right now Erik ten Hag is surely having good time and acceptable strategy which is working for the Manchester United, and now they have good results after few years which are giving impression that we can expect big success and long time performance from these all players which is surely tag of the Manchester United.
If he wants to be remembered as the level of Sir Alex Ferguson then surely needs nearly 15 to 20 years with good record and amazing number of wins because first one was really man of his performance, and surely he has done amazing stuff for this big club in England and Europe.