Rangers must change the entire culture at the club if they are to challenge for trophies next season, according to the club's former goalkeeper Cammy Bell. Rangers' title hopes collapsed after the split as they lost four consecutive matches and another summer rebuild is looming, with captain James Tavernier departing after 11 years. "They've not won enough in recent history and that's why the fans are frustrated at the moment," said Bell on the BBC's Scottish Football Podcast.