Scott Arfield believes former club Rangers are "right in there now" after a difficult start to the season - but still face a "true test" this weekend. Sunday's 3-0 League Cup last-eight triumph over Celtic extended Rangers' winning run to five in all competitions, the first four of which were all narrow victories. Next, Derek McInnes' men travel to face Martin O'Neill's side in the Premiership on Sunday, with the defending champions up against Fenerbahce in Thursday's Europa League match first.