Graham Arnold puts to bed talk of Celtic star’s frustrationsRogic will miss Scottish football’s Old Firm derby on SaturdayCoach Graham Arnold says Socceroos star Tom Rogic has put his disappointment at missing Celtic’s Old Firm derby clash with Rangers behind him and is focused on helping Australia defend the Asian Cup. Related: Martin Boyle states Socceroos case with brace as Tim Cahill bids farewell Continue readingreadfullarticle