Philippe Clement claims it could be a few days before Rangers find out the extent of a potential hamstring injury to Oscar Cortes. The talented Colombian forward, 20, has been on fine form ever since joining the club on loan from RC Lens and once again impressed in the eventual 2-1 victory over Killie. But midway through the second half Oscar Cortes was hooked in place of Scott Wright as Rangers fans nervously watched the kid grip his hamstring. Speaking after the game, Philippe Clement was asked about the situation involving Oscar Cortes but claimed it’ll be a few days until he can provide an…