Just so you know, the away goal rule was scraped, so it  changes the dynamics of the tournament a bit. Even when this match ends in a draw, I am still not confident if Manchester United can keep their consistency on and win the home game.[/quote]
Yep, the new regulation related to the away goal is implemented. There is nos special away goal anymore.
So, both clubs must do their best in the second leg, to score higher than the other. So, they will win the game.
In this case, MU should have better motivation to play at home in the second leg.
But, we know that sometimes, this club also cannot utilize this to win the game and moreover probably will be the opposite. BUt we also know that Atletico Madrid also often plays unsatisfied during this season. Both clubs so far often dissatisfy the result with their unpredictable games (bad).
But, let's see.