I'm not too sure that De Rossi can improve As Roma's standings in the remainder of this season and bring As Roma to the top 6 of the standings until the end of the season. because usually firing a coach in the middle of the season won't change anything. De Rossi needs adaptation to build the As Roma squad.
Of course Daniele will need time to bring changes to Roma in the second half of the season. Roma is only 5 points behind the team ranked in the top 4, which in my opinion is not too far because there are still many matches left in this season. Roma is indeed having difficulty bringing in quality players in this winter transfer window because they do not have strong enough finances to buy quality players. For this reason, with the existing squad, Daniele must be able to bring Roma to reach the top 4 this season.
Tomorrow match will be Daniele first debut as Roma, where Roma will face Verona in tomorrow match. I think this match is not too tough for Roma because the team they are facing is a team that is at the bottom of the standings. I think roma will be able to end their bad streak recently and their focus is on securing 3 points in tomorrow match. Playing at home will make Roma very favorite to beat Verona.