Rangers are on the hunt for additional firepower this summer as the club step up their Champions League Qualification hunt. The Ibrox side are back at pre-season training but there is still much surgery to be done on a squad which is going through its biggest evolution in six years. So far the club have added defensive duo Jefte (Fluminense) and Clinton Nsiala (AC Milan), with the swoop for Connor Barron (Aberdeen) set to go to tribunal. Also completing more permanent deals for Mohamed Diomande (FC Nordsjælland) and Oscar Cortes (RC Lens), the club is still hunting additional strike power. A m…