"I'm happy and so excited to be part of his team, right now I'm just looking to get used to my role but as I said I'm happy to be here and play two minutes or 20 minutes and I'm especially happy to play against the likes of Team USA," Achara said.
Achara came off the bench in Sheffield on Sunday and scored eight points in an impressive all-round performance against Portugal, but the Scot admits that as tough as last weekend's game was, the USA will be a much different opponent.
Regardless of the team that GB are facing though, Achara states that the visit of such names as LeBron James, Kevin Durant, Chris Paul and Kobe Bryant is just all part of the Olympic preparations.
"I see it as a historical moment for British Basketball but as a professional athlete, you want to be playing the best," Achara says.
"They play and train the same way we do every day so I'm just ready for a challenge. I know it's going to be a tough game but we are going to make the most of it."
The Scot added that tonight's game is another step forward to a dream.
"Playing against USA makes playing in the Olympics that little bit closer. It's sinking in a little, but I'm still trying to pinch myself at times," he said.