Per Mertesacker has been revealed as Arsene Wenger's debt collector in chief at Arsenal after a breach of training ground security that infuriated the Gunners manager.
Wenger was said to be "very disappointed" after a fan revealed some of the inner secrets of his regime after a visit to Arsenal's Hertfordshire training base.
According to reports in several newspapers, defender Mertesacker has been appointed by Wenger to collect fines imposed on first team squad members for any breaches of discipline.
Top flight clubs have long been protective of the secrets of their training bases, but details of the fines at Arsenal have given an insight into the club's disciplinary measures.
The fines, revealed in a photograph of a list published online, include:
Non-attendance of unused players at home matches without permission of manager - £1,000.
Being late for training - £250 (15 minutes), £500 (30 minutes).
Being late for matchday meetings/meals - £250.
Wearing inappropriate clothing outside the dressing room - £100.
Newspapers in dressing room - £100.
Non-production of urine sample for two consecutive weeks - £200
Phone calls in the building (texting allowed) - £500.
An Arsenal spokesman said: "The pictures are genuine. We understand that they were taken by a friend of a member of staff during a private visit to the training ground.
"The manager was made aware of the pictures being published, and we are very disappointed. We will review our procedures."