CLERMONT-FERRAND, FRANCE - OCTOBER 21: Dylan Hartley, the Northampton captain, is talked to by referee Ben Whitehouse before being shown the yellow card during the European Rugby Champions Cup match between ASM Clermont Auvergne and Northampton Saints at Stade Marcel- Michelin on October 21, 2017 in Clermont-Ferrand, France. (Photo by David Rogers/Getty Images)
