Former Blues star Oscar said he enjoyed playing under Jose Mourinho at Chelsea and compared the Portuguese manager to Antonio Conte.
The 28-year-old spent four year-and-a-half years at Stamford Bridge and won several trophies with Chelsea, including the Premier League title in 2014/15 under Mourinho.
The Portuguese boss, who now manages Tottenham Hotspur, apparently left a deep impression on Oscar.
He told ESPN Brasil: “Mourinho likes to work on the athlete’s psychological side. He always wants the player to be happy to play.
“Sometimes it seems to be difficult to work with him, but he does it because he charges to the maximum.
“He takes you out of your comfort zone. He’s really good.”
The Brazilian play-maker was one of Mourinho’s favourites, to to the point that it drove former Chelsea Player of the Season Juan Mata to the exit in January 2014.
Oscar added: “I had a lot of good times with him. He was a guy who helped me grow a lot in football.
“He trusted me and praised me a lot for the press. I really enjoyed working with him.”
Oscar also spent six months under Antonio Conte before his shocking move to Shanghai SIPG in January 2017.
Speaking about the two former Chelsea managers, he said: “Mourinho is much more of a figure than [Antonio] Conte. He charges a lot, but he is very funny on a daily basis.
“When the team is winning, he plays a lot with the players and asks if the family is doing well. He likes to makes some jokes.”