Defender Olwethu Makhanya has warned there's more to come from resurgent Rangers once they learn to be clinical. The Ibrox side have recovered from a poor start to Derek McInnes' reign by winning six straight games, including rare back-to-back derby wins over Celtic in the League Cup and Premiership respectively. McInnes' men have conceded just one goal during their winning run, but four of the victories have been a single goal.