GLASGOW , SCOTLAND - SEPTEMBER 10: Joey Barton of Rangers challenges Nir Bitton of Celtic during the Ladbrokes Scottish Premiership match between Celtic and Rangers at Celtic Park on September 10, 2016 in Glasgow. (Photo by Steve Welsh/Getty Images)
GLASGOW , SCOTLAND - SEPTEMBER 10: Joey Barton of Rangers challenges Nir Bitton of Celtic during the Ladbrokes Scottish Premiership match between Celtic and Rangers at Celtic Park on September 10, 2016 in Glasgow. (Photo by Steve Welsh/Getty Images)