Rangers winger Oscar Cortes is one of a number of Ibrox stars who apparently cannot shake their ‘bad luck’ with injury problems. The Colombian winger, 20, once again finds himself on the sidelines after missing training ahead of the Europa League clash with Malmö in Sweden. The RC Lens attacker – who signed an extended loan-to-buy deal with Rangers in the summer – had only just returned to the first team after sustaining an injury on the opening day against Hearts. Now, Philippe Clement has been explaining Oscar Cortes’ latest injury problem and is praying that this will be the last of the hoo…