It actually appear like a bad decision when Roma sacked Jose Mourinho but if you look at it carefully, you will realise that the management's were looking at the results. Football is not based of past glories, it is business that present results is very vital for decision making. Just unfortunate that despite sacking Mourinho, the situation did not change much. Now that it is looking like they might not scale through to the championship spot, they can just concentrate in getting a spot at the Europa. Their one zero win against Lazio is actually a good one.
Roma are in a positive trend at the moment after the change of coach, but in my opinion we also cannot say if Mourinho has failed in roma, because so far when Roma can play in the Europa League and even stay in the top 10 of the league Isn't it all thanks to Mourinho hard work?
At the moment I think Roma chances of ending the season in the Champions League zone are still open because the gap may not be too big between Roma and Bologna, but still Roma must have Consistency to do so.
The glory of the club in the past is certainly only a memory but actually from the experience of glory in the past the club and coach should be able to learn to be able to repeat the glory in the future, I think Roma must be able to take advantage of every moment that exists to be able to repeat their glory and of course by winning one by one their remaining games this season, A win over Lazio would motivate Roma to be even better, especially in the next few days they face a tough game against Milan in the Europa League and of course De Rossi must be able to do so to Prove he is better than Mourinho in managing Roma by winning that the game and leading Roma to win the Europa League this season.