I dont know why but i can feel a final between Liverpool and Rome, if Rome has the enoguht luck in his side they can be in the final and De Rossi seems like he have that and plus the players are with him 100%.
For me Leverkusen is not gonna reach the final. They are gonna be very bussy with Bundesliga and they are not so good on head to head.
That possibility could happen, but Roma must beat Milan. Roma actually didn't perform that well, but they could be very strong in the deciding match.
Even though I'm not really sure Roma can make it to the final round, the chances are not bad either. while on the other hand, Leverkusen has a good chance this season with the Bundesliga and Europa League. They can achieve big achievements this season and there is no reason to only focus on the Bundesliga.
The teams currently in the quarter-finals certainly consider Leverkusen's strength this season. they cannot be underestimated.