A visitor to Arsenal's training ground tweeted a picture detailing a list of fines the Gunners manager hands out to his players for a variety of offences - from tardiness to failure to wear appropriate clothing or footwear.
It is believed an Arsenal fan who is a friend of the Gunners' club doctor Gary O'Driscoll tweeted the picture following a visit to the club's training ground in London Colney.
"It's more disappointing than upsetting," the Arsenal manager said. "It's frustrating because I feel you have a right to privacy inside the dressing room.
"When that is not respected, it's disappointing. It was not malicious. It's more innocent.
"The intention counts for me and I don't think the intention behind that was anything bad. It's more disappointing than anything else."