Villa face Liverpool at Wembley in the FA Cup semi-final on sunday. Liverpool will have to keep Villa's in-form Benteke quiet. The Belgium international has scored eight goals in six games for Villa. Striker says that new manager Tim Sherwood has given him freedom. Benteke struggled for form earlier this season after recovering from injury. A year ago he ruptured his achilles and missed the World Cup. Benteke returned in october but did not hit top gear straight away.