Sunderland’s Greek winger Charis Mavrias needed hospital treatment after the under 21’s game against Tottenham.
In what has been described as a freak accident, Mavrias had quite a bad cut to his arm, following a sliding challenge hitting an advertising board.
U21’s boss Stockdale hopes that he will be back soon, as Mavrias has been one if the real stand out players for the reserves side, who were performing under Dick Advocaat.