The speedy forward has made a big impression so far this season, and is set to stick around at Coopers Stadium after putting pen to paper on a new deal
The 18-year-old's previous contract was set to expire at the end of next season but with head coach Josep Gombau putting together a long-term plan to bring success to Hindmarsh Stadium, Mabil has made it clear he wants to be part of that.
Mabil has played in 11 of Adelaide's 14 games this season - just his second campaign in the A-League - and is clearly one of Gombau's preferred players.
The Kenyan-born speedster believes staying with his home-town club is the best move for him at this early stage of his career.
"I feel very happy with the decision we've made because it feels like a family at this club," Mabil said on Wednesday.
"To be offered a further two-year deal is really good for my development.
"Josep is a really good coach and I feel comfortable and I am learning a lot under him. I'm in a really good environment to learn and that's why I really enjoy it here."
Mabil has made 16 appearances for the Reds since he made his debut against Perth Glory in January 2013, although just three have been from the start.
But despite remaining very much a bench option for Gombau so far, Mabil's potential has definitely caught the Spanish coach's attention.
"Awer is a very good player who is doing many things well and continues to improve," Gombau said.
"We believe in him and this is a reward for all the effort he is doing so far.
"Of course he is a young player and still needs to improve but I am so happy to work with him because he is one of the players of the future for this club."
Last season's National Youth League player of the year was born in a Kenyan refugee camp after his Sudanese parents fled the north African country.
The Mabil family moved to Australia when Awer was 10 and he joined Adelaide United after impressing with Campbelltown City in the South Australian National Premier League.