Inter Milan goalkeeper Julio Cesar is confident they won't lose their Serie A focus as they prepare to face Champions League rivals Manchester United next month.

"Can we extend our lead during the next few rounds? I certainly hope so," Julio Cesar said in an interview with La Gazzetta dello Sport.

"It is crucial that we restart in the best possible way and secure some important victories.

"I honestly believe that the most difficult test will be the first game back against Cagliari.

"I'm not thinking about the Champions League game against Manchester United with Cristiano Ronaldo and Wayne Rooney.

"I am worried about Robert Acquafresca because a goalkeeper must always think about his next opponent."