Corinthians star Ronaldo says his old club "need strong leadership" if Florentino Perez's Galacticos II policy is to succeed.

"We played well in the first year and for half of the second," recalled the former Real striker. "After the departure of Vicente del Bosque, Carlos Queiroz struggled a bit and then after that we could do nothing.

"Cristiano Ronaldo and Kaka are both good signings and intelligent players.

"The key is strong leadership from the coach."