Roberto Martinez has revealed that Steven Naismith could not remember scoring for Everton in the FA Cup after picking up a concussion.

The winger scored the Toffees' second goal in their 3-1 victory over Swansea City at Goodison Park earlier today.

The manager told BBC Sport: "Steven took a knock and had delayed concussion. He felt fine initially and was then dizzy. He couldn't remember that he scored, so I told him he scored from 40 yards.

"Steven is a gem of a boy. He has an incredible attitude and I'm so pleased he is enjoying his football. He was instinctive and a real threat when he came on."

Everton will face Arsenal in the quarter-finals of the competition next month.