Yes, this new regulation actually gives pros and cons. But imo, this is fair enough to maximize their games even at home or away.
If the result until the extra time is still a draw, it will be a dramatic penalty between Man United vs Atletico Madrid then, then.  
I still have no idea which will win, but Man United should have a higher chance to score. But once more, let's see, sometimes, this club also play unpredictably and surprising with some losses
For Elanga itself, maybe he will because of his contribution so far. Some predict this in the next leg.