Parking the bus is a must for italian club. How good or bad the gameplay from the team doesn't even matter. The history is always writting the winner from the league. It doesn't really matter what gameplay to get the trophy as long as you get a trophy and you were a winner. There's no need to feel parking bus is shameful strategy to be used
It is true that history is always marked the winners, champions, not the losers and runner-ups. Leverkusen are playing impressively and they are going to the final match. Only one more barrier along their way to the final, Roma which beat Leverkusen in the last season.
Roma will play defensive but less serious like with Mourinho and De Rossi will try to choose good time within a match to force his players do attacking and find a win at home.
Roma is gonna destroy leverkusen soon. Lukaku can play alone at upfront since he has very good physic to be one on one or even two on one.
From parking a bus to destroying Leverkusen, there is no logic and solid foundation for your belief. Roma can win against Leverkusen but destroy the German opponent, sounds unrealistic.
The status of Lukaku is unknown and he is very important for Roma because two other strikers, Abraham and Azmoun are not good enough to replace Lukaku.
I'm sure De Rossi will not implement a bus parking strategy because as far as I know, that De Rossi is more inclined or more interested in implementing an attacking strategy whatever the situation occurs. But anyway, if for example AS Roma play more defensively in the match against Bayer Leverkusen later, I think the bus parking strategy is unlikely to be successful against Bayer Leverkusen. because after all, sofar also Bayer Leverkusen is quite often behind with a score of 1-0 and also 2-0 and then the opposing team defends the victory but anyway, in the end Bayer Leverkusen still always manages to make an equalizer score or maybe also manages to turn things around. Therefore,whatever the situation and whatever strategy AS Roma uses later, I personally still believe Bayer Leverkusen still has a very good chance to advance to the final match and get the Europa League trophy this season.