"We're aiming to play an entertaining brand of rugby which fits with the Baabaas' tradition of innovation and flair. For that, we'll need a mix of new, young stars and more experienced provincial campaigners," said McMillan.
"It is a great opportunity for the match in Whangarei to set the scene for what promises to be an enthralling series with the British and Irish Lions.
President of New Zealand Barbarian Rugby Club and former All Blacks prop Ron Williams said it was fitting that the Barbarians would open the series.
"The New Zealand Barbarian club has a proud tradition dating back to 1937, representing every region over the years. We're excited by Clayton, who has an excellent track record, coming on board to lead the provincial Barbarians and looking forward to seeing the club's traditions passed on to the players who take on the Lions. We can't wait for June 3."
The team will be managed by Chris Back (Wanganui) and is rounded out with Northland support staff, Jed Smethurst (physio), Tim Hurst (strength and conditioning) and Conlin Locke (doctor)."