Euro Sport – Arsenal have confirmed they are investigating “as a matter of urgency” whether academy coach Mark Arber bet on the signing of Mesut Ozil. Former Dagenham and Dartford defender Arber, whose father Bobby has also worked for the Gunners as a scout, posted a Tweet on his personal account, @1Arbs, on Monday that suggested he had bet on Germany midfielder Ozil’s impending move to the Emirates Stadium. “Lovely bit of 14-1 Mesut,” he wrote. The Barclays Premier League club are now looking into the potential breach of gambling rules. A club spokesman said: “We take this very seriously….