Guildford missed the initial training squad but was brought in by Hansen following the injury to Chiefs player Richard Kahui, who is likely to have played on one wing. Hurricanes wing Cory Jane, who is now also injured, would have played on the other.
With Hansen hinting that Julian Savea could make his debut in his specialist left wing position at Eden Park, Guildford is leading the pack for the relatively unfamiliar position on the right. The other contenders are another left wing specialist Hosea Gear, or fullback/utility Ben Smith. All will be revealed tomorrow (Thurs) morning.
Guildford's last game for the All Blacks was in the World Cup against Canada in Wellington, a match in which he scored four tries. Now he is hoping to add to his test and try tally against the Irish, saying the form of his franchise had given him a boost.
"It is nice," he said. "As a whole we've played pretty well for the past few games and I'd just like to keep that momentum building individually if I do get a chance."
The All Blacks are expecting a direct approach from Ireland, although a forwards-based onslaught will be severely hindered by the absence of tighthead prop Mike Ross who has a hamstring strain. Ireland are already without veteran Munster lock Paul O'Connell, who didn't make the trip.
Guildford, who has played eight tests and took the field against Ireland as a replacement in the All Blacks' big win in New Plymouth two years ago, said he was also expecting an aerial bombardment.
"By the looks of things they've got a pretty dangerous back three and their midfield has played a lot together. From what I can see they like to put a bit of snow on the ball so we'll be tested with those contestables [kicks].
"We need to come in hot in the first game and from there we can build. It's a pretty exciting time for us."
Reflecting on his inclusion in the All Blacks after being brought into the squad almost three weeks ago, Guildford said he was confident it would come.
"I knew if I worked hard and kept out of trouble and did the right things on the field then eventually it would come but I'm very grateful to get the opportunity again," he said.
The next phase, taking the field again, is not far away.