Manchester United midfielder Paul Pogba has admitted he made a "stupid mistake" after he gave away a third penalty since Ole Gunnar Solskjaer took over the club's helm, and the manager later reacted to the incident.
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The France international fouled Hector Bellerin inside United's box in the 69th minute of his side's 1-0 loss to Arsenal on Sunday, with Pierre-Emerick Aubameyang converting the subsequent spot-kick.
"Maybe I was a bit out of breath and it made me do this stupid mistake," Pogba told BBC Sport.
"I felt like I touched him a bit and I knew I was in the box. I shouldn't have given a penalty away like that.
"I'm not the best defensively in the box, but I can learn and work on that."
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After the match, Solskjaer, who was overseeing his 100th game as United coach, said that Pogba should have done better.
"Paul has held his hand up," the Norwegian said.
"He knows he could and should have done better in that instance. He knows if he stays on his feet it will be OK because the boy isn't going anywhere."
While United remain without a victory at home in the Premier League this season, drawing once and losing three times at Old Trafford, Arsenal collected their first win at the Manchester club's home ground in 14 years.
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Solskjaer's men are now 15th on the log with just seven points from six games, while Arsenal have moved to ninth position with 12 points.