Paul Pogba admits he made a "stupid mistake" when he tripped Hector Bellerin to concede a penalty in Manchester United's 1-0 defeat to Arsenal.
The midfielder clipped the Gunners full-back's ankle in the United box, prompting the referee to point to the spot.
Pierre-Emerick Aubameyang converted the spot kick to seal the victory for the away side, consigning the Red Devils to their third Premier League defeat of the season.
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Pogba admits his side were not at their best in the clash at Old Trafford and suggested he gave away the penalty because he was "out of breath".