Ancelotti believes only Rooney can stop Chelsea from winning the Premier League this season.
He said: “United are using Rooney very well in this moment. Every game he proves his quality. He’s a fantastic, fantastic player.
“I am surprised because he never drops, he always improves his performance.
“It’s a good thing not only for Manchester United, but also for the national team because to have Rooney in this condition is very important for England at the World Cup. Is he the best in the world at the moment? I think yes. At the moment he’s the most decisive player in the world.”
