Northampton keep George North on sidelines while Wasps consider appeal

• Brain tests continue after three concussion injuries since autumn
• Wasps’ James Haskell ‘astounded’ by red card for Nathan Hughes
• Wasps to contest Nathan Hughes three-week ban, says Dai YoungNorthampton could not confirm on Wednesday when George North will return to action. The Wales wing will miss the European Champions Cup quarter-final at Clermont Auvergne on Saturday as he continues neurological tests after suffering three concussion injuries since the autumn.Jim Mallinder,