Balotelli has a history of on and off field disciplinary problems and there are concerns the 24-year-old could destabilise the Merseyside club.
Former Liverpool manager Graeme Souness said: "It's an enormous gamble by Rodgers, a gamble I don't think he needs to take because he has a very strong group of players."
It is hoped Rodgers will be able to get the best out of the Italian due to his proven track record of dealing with difficult players.
The departed Luis Suarez flourished under Rodgers, whilst Raheem Sterling has also progressed incredibly well.
Rodgers feels confident he can revive Balotelli's career at Anfield because in Daniel Sturridge he took another “difficult” footballer and made him flourish. Off the field, Suarez and Sturridge were not close but on it they formed one of the most lethal attacking partnerships Liverpool has known.
Mario Balotelli: The funniest stories
Show all 18
With Suarez having left for Barcelona, Sturridge would have felt he was now indisputably Liverpool's main striker. Balotelli's arrival on Merseyside may have altered that, although Rodgers is confident Sturridge’s ego is less fragile than it once was.
"A top player with a top mentality will respond to the competition,” said Rodgers. “I have spoken to Daniel and said how important he is for the team. The confidence I have in him has been shown in his performances. He has 36 goals in 50 games for Liverpool. You can’t do that if you are not happy with your life and your football."
There have also been questions raised about where Balotelli fits into Liverpool's system, but Rodgers is confident he can make it work.
“We can also play a diamond. We played that eight times last year and won seven, and we flipped to that against Southampton. We can change systems and I need that flexibility. Also, if you look at Daniel’s injury record, then he has missed a number of weeks through being injured. I need to ensure I have got the replacements if they are not on the pitch at the same time.”
Join our commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies
Join our commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies