Former Aston Villa striker Gabby Agbonlahor has shared who he wants to win the Championship play-off final – Leeds United or Southampton. Having come down from the Premier League together last season, the two sides will now bring English football’s domestic season to an end at Wembley on Sunday. Leeds overcame Norwich City by an aggregate score of 4-0 thanks to an incredible second leg performance in the semi-finals, while Southampton comfortably defeated West Bromwich Albion 3-1. OPTA’s supercomputer had both sides as the favourites to come through those respective matches, and and with third…