Heung-min Son has admitted confidence among the Tottenham squad is low heading in to Sunday's North London Derby, reports the London Evening Standard.

Spurs are winless in their last six and suffered a 1-0 Champions League defeat at home to Bayer Leverkusen on Wednesday.

After scoring five in his first five games of the season the South Korean international is without a goal in his last six.

"Maybe confidence is low in front of goal, maybe, it is," he told reporters.

"I think we have had great chances in every game and it's also a bit unlucky.

"We have to accept that it is three goals in six games and we have to try to score. When we play, we don't want to lose."