Sunderland boss Roy Keane admits he's weighing up changing the dimensions of the Stadium of Light pitch.

Keane confirmed that he changed the dimensions of the pitch for the Ajax game.

"Maybe it was slightly tighter. It was something different," he said.

"Once the pitch is set in size for the season that's it - there's no changing it. We have other teams' pitch sizes. Obviously some teams want a big pitch, others like it nice and tight. Ours is in between."