Pompey take on Coca-Cola Championship side West Brom in the semi-finals at Wembley on Saturday before returning to Barclays Premier League action in east London on Tuesday.
Hammers defender Neill believes Harry Redknapp´s men could be "off guard", saying on the club´s official website whufc.com: "Obviously all their focus will be on that FA Cup game. Maybe we can catch them off guard, on an off day where their focus is elsewhere. Either way it´s a game at home and we want to win."
Copyright (c) PA Sport 2008, All Rights Reserved.