After De Rossi took over as coach, Roma played 26 matches and won 14 matches. De Rossi's win percentage is 53.8. On the other hand, under Mourinho, Roma played 138 matches and won 68 matches. win percentage is 49.28. So I can't say that De Rossi has been able to improve the Roma team much. It is not possible to give a prediction about how the Roma team will play next season.
He never said Daniel De Rossi was a much better coach than Jose Mourinho, No! Nobody doubts that and we all need know better. Jose Mourinho was sacked because his side played poorly though, he demanded for some improvements and upgrades but they the management of As Roma didn't comply to his needs for this season aftwr leading them to them very first European Competition as he went ahead to win them the Conference League Competition.
They did not just play consistently, they had togetherness amongst themselves and was able to play a much better style of football sooting to the human eye.
Jose Mourinho had wins no arguments but know that De Rossi has just managed this club for few months, should I say five months? Yeah, maybe five and he is able to get that winning rate almost close to Jose Mourinho, should tell you enough already.
He did, even with this same of players that Jose Mourinho used before he was sacked. The truth is that, Jose Mourinho and his tactics has got to be outdated and he needs to take some time off coaching.
De Rossi is in the age of which he should be able to put in his best coaching skills for good results, but I don't know what happened towards the end of the season that his game strategy was no longer working in their favor. Or is it that Roma players on purpose displayed a very poor performance in order for Mourinho to be sacked because they don't want him anymore, and when De Rossi came in as manager, they decided to display their best performance so that it would be like it was Mourinho who was their problem.
Maybe this was why it was all good in the beginning when De Rossi took over, and getting bad towards the end of the season because De Rossi get no coaching strategy and the players can no longer cope with Mourinho game pattern which they were using to win initially.