The former South Africa and Vasco da Gama coach is hoping he can win the prestigious South American tournament and is already thinking about reinforcements
The 63-year-old coach is set to take over from Vanderlei Luxemburgo, who was sacked last week after his relationship with star player Ronaldinho had become strained.
Santana is aiming high for the Copa Libertadores, with the former Bahia coach already making plans for the transfer market.
"We talked about that [new signings] and a lot of other things," Coutinho told Lancenet. "We only have one place in the Libertadores squad and we have to be very calm to know which player we will register.
"Joel wants to win the competition, no matter what. I thought he was really determined.
"He told us that even though he played for Vasco, his parents were Flamengo supporters and they did everything to make him one too."
Flamengo are through to the Copa Libertadores group stage after defeating Bolivian side Real Potosi, and will meet Olimpia, Emelec and Lanus.