Captain Brendon McCullum indicated - as diplomatically as he could about a trusted friend - an exit strategy needs consideration.
"It's probably something we need to discuss further down the track. It's a rolling decision about what Dan needs to prioritise and how many overs he's got left. It'd be nice to think he can play every game in all three forms but that's not realistic. So we need to continue those conversations. I certainly see a place for him in the team. It'd be silly to sweep away that experience; those runs and wickets. He jumped on a plane straight away to be here, so he was keen.
"He's brought a lot more facial hair, that's for sure," McCullum quipped about Vettori's latest effort which channels WG Grace. "Having one of the country's cricketing legends around the group helps rather than hinders. The concern was the workload he might have carried. We couldn't be certain some of his troubled areas wouldn't flare up and how it would impact on the coming weeks [for the Champions Trophy]."
McCullum doesn't want to add to Kane Williamson's burgeoning list of responsibilities either, as the vice-captain batting at No 3.
"He's a viable spin option but it's unfair to expect him to bank 20-25 overs. However, he has taken wickets at key moments, is growing in stature within the team and his bowling is a symbol of that."
The wider problem lies in succession planning rather than Vettori's departure through natural attrition. Left-armers Trent Boult and Neil Wagner could be with the team for several seasons so an off spinner would be preferable to attack the stumps from their footmarks against right-hand batsmen. That's a touch "Dear Santa" but no one on the domestic scene appears to the manor born.
Bruce Martin could be worthy of perseverance when his calf injury repairs but, at 33-years-old and with 10 wickets at 47.10 in four tests, he might need a PR firm to pitch a convincing case.
Jeetan Patel has been playing solidly with Warwickshire where he took five for 56 against Yorkshire last week at Edgbaston. He has the experience of 19 tests dating back to 2006 but is also 33 and struggled in his last test series in South Africa where his aggregate was one for 194.
Leg-spinner Todd Astle took one for 97 on debut in the victory at Colombo but has fallen from favour. The 26-year-old finished the Plunket Shield with 13 wickets at 56 for Canterbury. Fellow leg spinner Tarun Nethula suffered the yips touring India before he could earn a test cap, but the 30-year-old fought back with 22 wickets at 36.95 for Central Districts last season.
The best hope appears to be former national under-19 leg-spinner Ish Sodhi. He moved from Auckland to Northern Districts last summer and played all 10 first-class matches, collecting 20 wickets at 44.80. Backing the 20-year-old could pay off long term, but there's still a vacuum to Vettori.
