Arsenal signed the Germany playmaker on transfer deadline day from Real Madrid. Arber had sent a tweet that day on his personal Twitter account saying: “Lovely bit of 14-1 Mesut.”
The tweet appeared to imply that he’d placed a bet on the Real Madrid star joining Arsenal, a move that would be in breach of FA betting rules.
The FA rules state: “You are not allowed to place a bet on a game or competition in which you have any influence, either direct or indirect.
“The above includes all bets related to the following: Any other events involving your club or other clubs playing in the same league competition (such as next manager markets).”
Early on Friday, Arsenal said there were reviewing the matter urgently, and they’ve now released a statement confirming that action has been action.
A club spokesman said: “We take this very seriously. Following an investigation we have taken appropriate action in relation to a casual worker.
“All Arsenal employees and workers are well aware of their responsibilities in this respect.”
Arber, who coaches at the Arsenal academy, also plays non-league football for Corby Town. Ozil signed for Arsenal in a club record £42.5m deal on Monday – the final day of the summer transfer window.
Other acquisitions over the course of the window included two free transfers – Yaya Sanogo from Ligue 2 club Auxerre and Mathieu Flamini on a free transfer.