Good question, especially as the match report of the game on the official site names them.
It is almost as if the left hand doesn't know what the right hand is doing.
I notice that on the official site, a fixture has been added to the U-21 schedule showing a home match against Southampton tomorrow. However, on the Saints website, their U-21 fixture list has them playing away at Sunderland.
Does anyone have any more info, or know if the U-21s really are in...