However, with 19-year-old goalkeeper Rebekah Brook, of Dunedin, arriving shortly after the interview, it is not exactly a closely-guarded secret.
Gwilliam, the assistant coach of Virginia Tech, arrived in New Zealand on Thursday and leaves today.
National Collegiate Athletic Association rules prevent Gwilliam from talking about the individual players he is here to assess - but he confirmed he was on a scouting trip.
"I can't comment on individual players," Gwilliam said.
Virginia Tech has 14 scholarships worth $US25,000 ($NZ42,000) to offer over a four-year period.
Brook, a University of Otago psychology student, would love to add another stamp to her passport.
"It's a huge opportunity. I'm quite excited."
Brook, who plays for Northern in the Footballsouth women's premier league, was the only player from the area selected in the under-20 women's team which competed at the World Cup in Chile last year.
However, she did not manage to get on the park for New Zealand, with No 1 goalie Charlotte Wood keeping her on the sideline.
Virginia Tech has a strong football programme and plays in the top conference.
Gwilliam described the scholarship system as a win-win situation.
"It's great for everyone.
"To bring kids over and give them the experience, and to have the kids in the States have that international experience as well."
