Rangers should always be looking for the next big thing in foreign fields in the hope that picking up a bargain can lead to future riches and glory. Erling Haaland was a six-figure signing for Molde before cashing in for millions and Harry Kane spent years out on loan in England’s lower leagues before injury gave him his chance. It was a similar story for Khvicha Kvaratskhelia who starred at Ibrox but so easily could have become a Rangers player and is now being linked with a mega-bucks move. READ MORE: All 95 Rangers Hall of Fame inductees including Ally McCoist and James TavernierBig money o…