I didn't get wrong about Manchester United and Arsenal both when it comes to their first games. I was doubting Arsenal and expected a draw maybe. They really couldn't beat Sporting despite being the better side. But I don't doubt Arsenal in Emirates in the second leg either. Arsenal should be able to be more dominant there to finish the job decently.

Manchester United have already finished the job in Old Trafford I assume. Because it was a 4-1 win and I don't think Betis are capable enough to get a similar win to make a comeback in Spain.