"We can only support that," Hansen said. "I'd rather he went on a sabbatical than retire. There's still a lot of rugby left in him, it's just an indicator that players need to step out, get that decent break, get their bodies right."
Smith, 31, a veteran of 66 tests for the All Blacks, will play for the Hurricanes against the Brumbies in Canberra on Friday after recovering from concussion suffered against the Bulls three weeks ago.
This Saturday, Ranger and his Blues teammates will be looking at regaining coach Sir John Kirwan's trust against the Highlanders after a disappointing display last weekend against the Brumbies at home.