Dylan Hartley’s place on England tour to South Africa in jeopardy

• Hooker missed Northampton’s past two matches with concussion• We’ll do what’s right by Dylan, says Saints coach, Alan DickensDylan Hartley’s place on the England tour of South Africa this summer is in question after Northampton admitted the national captain’s latest concussion lay-off is a cause for concern.Hartley has missed Northampton’s past two matches – including the 50-point thrashing by Saracens on Saturday – after showing symptoms of concussion following England’s Six Nations defeat by Ireland more than three weeks ago. The 32-year-old has a history of concussions and in the summer o…