Arsenal legend Sol Campbell was furious at the manner of his old team conceding to Tottenham in the North London Derby.

The Gunners took a lead in the game through Alexandre Lacazette.

However, they could not hold on for very long, with Heung-Min Son latching onto a Sead Kolasinac back pass and slotting past Emiliano Martinez.

Spurs went on to win the game 2-1 thanks to a Toby Alderweireld second half goal.

"This is slack," said Campbell, speaking on Sky Sports.

"It's all about concentration, keeping it simple.

"You have gifted them a goal, you're 1-0 up, what are you doing?

"Don't try and be clever."