NORTHAMPTON, ENGLAND - JANUARY 14: George North of Northampton in action during the European Rugby Champions Cup match between Northampton Saints and Castres Olympique at Franklins Gardens on January 14, 2017 in Northampton, United Kingdom. (Photo by Clive Mason/Getty Images)
Castres French full-back Geoffrey Palis (2nd L) makes a break during the European Rugby Champions Cup rugby union match between Northampton Saints and Castres in Northampton on January 14, 2017. / AFP / OLLY GREENWOOD (Photo credit should read OLLY GREENWOOD/AFP via Getty Images)
NORTHAMPTON, ENGLAND - JANUARY 14: Teimana Harrison of Northampton is tackled by Julien Dumora of Castres during the European Rugby Champions Cup match between Northampton Saints and Castres Olympique at Franklins Gardens on January 14, 2017 in Northampton, United Kingdom. (Photo by Clive Mason/Getty Images)
NORTHAMPTON, ENGLAND - JANUARY 14: George North of Northampton in action during the European Rugby Champions Cup match between Northampton Saints and Castres Olympique at Franklins Gardens on January 14, 2017 in Northampton, United Kingdom. (Photo by Clive Mason/Getty Images)
Castres' Argentinian wing Horacio Agulla (L) is tackled during the European Rugby Champions Cup rugby union match between Northampton Saints and Castres in Northampton on January 14, 2017. / AFP / OLLY GREENWOOD (Photo credit should read OLLY GREENWOOD/AFP via Getty Images)
