The Canberra product was taken by the GWS Giants with pick 10 after they matched the Carlton Blues' bid in the AFL draft on Wednesday night.

Brad Johnson had the highly-rated midfielder going with pick one. Development guru Mick Ablett thought it would be pick two.

That ultimately mattered not as Green became the first player to be taken as a top 10 pick straight out of Canberra.

Green was bid on by Carlton at pick 10 but the Giants had the right to match the move on their academy product, using picks 41, 56, 59, 67 and 71 to get the deal done.

"It's the night dreams come true for a lot of boys here, so I'm just stoked," Green said.

"I'm very keen to get there and start training at the moment."

But there might be an awkward conversation or two when Green walks through the doors at Giants headquarters to begin pre-season training.

Because when the Giants were playing against the Richmond Tigers in this year's grand final, Green found himself barracking for the eventual victors.

"I grew up a Richmond supporter and I would say I wasn't disappointed when they won," Green said.

"Having said that, I have had a lot to do with GWS over the past couple of years and I would have been so happy for them if they had have won too.

"It was certainly bittersweet."

One can't hold barracking for Richmond against Green - his grandfather Michael won four premierships at Punt Road and you can find his name in the last line of defence in the club's team of the century.

"It's nice to have someone who has been at that level that you get to yourself, and you can have that mentor," Green said.

"But he is not the only one in my family as well. There's a lot of people I can turn to in my family that I am comfortable speaking with."

The 18-year-old was the Giants' second selection of the night after the club used pick four on Lachlan Ash.

"As a strongly-built midfielder, size and craft around stoppage is his asset and we believe that given his determination and character we had to prioritise bringing him in," GWS recruiting manager Adrian Caruso said.

"[Green] has shown great improvement in the last 18 months so we believe that in a full-time environment he will continue to grow."

The function room at Phillip Oval was filled with family and friends just waiting for that moment when they would hear Green's name uttered by AFL chief Gillon McLachlan.

Every time McLachlan walked to the podium a hush would fall over the crowd and phones would be raised in the hope of capturing the moment.

Each pick that came and went brought with it groans and questions about how much longer it would take before the Marist College export would be packing his bags for the big time.

Some in the room perhaps even began to think: what if he doesn't go tonight?

Of course, they needn't ever consider that possibility, because this rising star was always being picked up in the first round.

When his name popped up on screen following Carlton's bid the room erupted. From there the Giants matching the bid was a mere formality, so desperate were they to secure him.

The roar that went up when McLachlan announced GWS had matched the bid was spine-tingling. Arms were raised towards the ceiling and Giants flags were waving in the air.

Moments later there were two youngsters in Marist College training shirts running around on Phillip Oval with a football, perhaps dreaming of the day they could follow in Green's footsteps.