As Castore suffer fresh embarrassment at the hands of Sports Direct, Rangers nervously approach their next retail crossroads. The Gers signed a reported £25m deal with emerging sports brand Castore back in 2020 as the Ibrox board tried to find balance in the stormy post-Sports Direct seas. The saga surrounding Rangers’ retail operations continues to this very day with Sports Direct, Elite, Hummel, Mike Ashley, Castore and every other name we’ve been embroiled with still very much the main characters. After double embarrassment this week, Rangers face the end of this first Castore contract with…