straight to your inboxDavid de Gea says he cannot understand why teams are allowed to switch penalty takers if a spot-kick is retaken.The Manchester United goalkeeper saved Jordan Ayew's penalty for Crystal Palace in the opening game of the season but was adjudged by VAR to have been off of his line when the kick was taken.It meant Palace were able to retake the kick and Wilfried Zaha stepped up to put the second spot-kick past De Gea.Whilst De Gea was frustrated to have been penalised for being