Manchester United midfielder Paul Pogba took the blame for his team's 1-0 Premier League defeat at home by Arsenal after giving away the second half penalty that decided the outcome.
Pogba clipped the foot of Hector Bellerin with a poorly judged challenge inside the box, which he described as "stupid", and Pierre-Emerick Aubameyang converted the penalty.
"We know it's a poor performance. Myself, I cannot give a foul away like this," Pogba told the BBC.
"I thought I would touch the ball but I didn't. [I] cost us the goal today with the penalty.
"I shouldn't have given a penalty away like that. Maybe I was a bit out of breath, it made me do this stupid mistake. I will learn from that, I'm not the best defensively in the box, I can work on that," he added.