Warren Gatland in running for All Blacks job, says New Zealand Rugby head

• Steve Tew says Gatland could succeed Steve Hansen in 2019• Current assistant Ian Foster the favourite for head coach role A top New Zealand rugby official says Warren Gatland is among the potential candidates to succeed Steve Hansen as the All Blacks’ head coach, particularly if the British & Irish Lions achieve a stunning series win. New Zealand Rugby’s chief executive, Steve Tew, has also said the visitors remain a serious threat in the Test matches and, even if they lose heavily, that the future of Lions tours will not be endangered. Related: All Blacks coach Hansen laughs off Gatland…