Chelsea striker Salomon Kalou revealed how a half-time blast from angry coach Carlo Ancelotti helped give the Blues the boost they needed to go on and win their FA Cup semifinal against Aston Villa.

Chelsea had been lethargic and off the pace in the opening half as Villa dominated the game but Ancelotti let rip during the interval.

"He was saying that we were playing too static and there was not a lot of movement in the front," said Kalou. "Of course Carlo was angry because that was not the Chelsea that people want to see or the Chelsea we want to be.

"He was angry because of that and every player understood that we had to do better if we wanted to win the game."

Kalou also insists Drogba's opening goal in the 67th minute paved the way for their victory over a side they hammered 7-1 in the league just a fortnight ago.

Kalou came off the bench to help open the game up and the Ivorian believes they will need more impact players if they are to land the coveted double.

"Once we scored the first goal, we had more space to play and more chances to create goals," said Kalou.

"It is important if we want to win the double, that we have people who come off the bench and change games.

"We have never done the double before and it would be good history for the club and the manager. To have the opportunity to do the double as a player is amazing."