It's normal for coaches to decline, and that's normal in football. That happened because maybe the style of play is no longer suitable for now because there are many new coaches who carry the style of playing modern football. But in terms of quality, we cannot doubt the quality possessed by a Kose Mourinho, he is one of the coaches who has ever existed in the world of football.
Jose Mourinho is a coach who already has a lot of experience in coaching football teams so there is no doubt about his quality. But this also includes the whole team where the players also have to be really fit and good in order to win the match, because Bayer Leverkusen, who became the team against AS Roma in the semifinals of the Europa League this season, is also not in bad condition so Jose Mourinho has to able to give the right direction to his team before the semifinal match begins.
Mourinho is typical coach who can change mediocre teams became to strong team and he was already proven that several times and the latest is he was made a history with Roma that in this team he can able to get European Conference League trophy and for Europa league Mourinho recently has been gets the trophy from this competition with Manchester United on 2017 at that time he can broke the domination of Sevilla and beat Ajax in the final match
Just like i said before this is the fight between the student vs teacher that Mourinho used to has been train Alonso as a player when they are in the same team Real Madrid and if we see based on the experience obviously Alonso is underdog compared to Mourinho and whoever the winner of this match they will made a history at their current clubs but indeed if we see from the odds for the first leg apparently Roma is the favourite