Brazil has experienced a decline in overall team performance making it difficult for them to compete with other national teams in several official competitions. Ancelloti's presence is expected to bring big changes to the national team and they can return to the peak of glory that has been lost for a long time. Some Brazilian players are close to Ancelloti's training style so it will be a little easier to adapt and Ancelloti himself will also be a little easier to adapt because he knows some of the national team players.
Ancelotti emotional closeness with several Brazilian players will certainly speed up his adaptation period, I don't think Ancelotti will experience any significant difficulties. The World Cup qualifying round will be a good event to build chemistry, we will see clearly how Ancelotti performs at the national team level. I think all managers will still need time to improve the team performance, especially to bring Brazil back to its glory days. But at a glance, I think Ancelotti has the ability to do it, he is in the right place and the right time.
He would do a great job at Brazil, and that could cause a lot of income for the long term. If he could actually turn the ship around that would make sense to get it grow a lot because Brazil is not doing that great at the moment. With him being so close to Brazilian players then it would make him do a lot better. If he could do a great job and make this team win again, then he would gain his reputation back.
It's sad to see Ancelotti level coaches to get fired, Real Madrid won so much with him and he could have gained so much but that didn't cause anything at all. If he could get a growing amount of money there and we could have gathered a lot for him and instead he got fired instead, even though he won so much, he was sacked prematurely for one bad season.