I think Mourinho's quality has been declining for a long time, because before Mourinho coached AS Roma and the truth is Mourinho has failed to deliver good results at several clubs before. So, even though AS Roma is ready to buy some good players in the upcoming transfer market, but I personally don't believe Mourinho will be able to make AS Roma better and stronger.
But apart from that, of course, at this moment Mourinho just needs to focus on finishing the season well. Because after all, at this moment it is also a fact that Bayer Leverkusen is not a weak team because yes, Bayer Leverkusen has managed to improve so rapidly in the Bundesliga as well. Therefore, AS Roma does not have a big chance to qualify for the final, because of course Bayer Leverkusen will try their best to qualify for the final and this match will never be easy for both of them.