Cameron enjoyed an outstanding 2013 campaign, finishing third in the Coleman Medal race with 62 goals and earning All Australian honours and a best and fairest award, all at the age of 20.
Now Brereton has told AFL.com.au he expects Treloar to take a major step forward this season, believing the midfielder could soon find himself among the very best players in the competition.
Also just 20 years old, Treloar averaged 24 possessions in 20 games last year to finish fifth in GWS' best and fairest.
"I believe Adam Treloar can be the absolute elite player in the midfield and be top five in the comp with his ability, with his skill set and with his want and desire for the game," Brereton said.
"He's a very rare breed. Not too many guys with his pace are inside players.
"They normally tend to be on the outside.
"But he has enormous pace, enormous courage and seeks out body contact, which is an absolute rare blend.
"He has the makings of being something extraordinary."
Brereton has close ties with the GIANTS, having filled a part-time assistant coaching role with the newcomers over the past two seasons.
He has seen Treloar's development first-hand and came up with a big name when asked if the young GIANTS reminded him of another AFL player – Adelaide great Mark Ricciuto.
In his 15-year career with the Crows, Ricciuto picked up a premiership, a Brownlow Medal and eight All Australian nods.
"He doesn't really remind me of anybody because I find him quite unique," Brereton initially said of Treloar.
"Chris Judd is an inside player who has the pace of an outside player.
"Apart from a couple of indiscretions, Chris Judd is a ball player who never seeks out the opposition body to hurt them. Treloar does.
"He's got that little bit of animal in him that makes him a bit of a wildcard.
"He actually reminds me of a quicker version of a young, young Mark Ricciuto.
"He's that type of powerhouse kid, but he's quicker."
The other young GWS player to turn Brereton's head has been key position prospect Adam Tomlinson, who had a breakout season of his own in 2013.
Blessed with size and pace, Brereton believes Tomlinson can fill a similar role to Jack Gunston at Hawthorn, leading up and offering a target to the back line.
Tomlinson set two GWS records in 2013 with 127 marks for the season and 14 marks in one game, against Adelaide in round seven.
"His ability to run and his capabilities of finding the ball as a mobile, largish key forward type player is just an incredible asset," Brereton said.
"It's extraordinary a guy can be that big and have that good endurance.
"His size dictates he'll get a guy that can't go with him."
Brereton is also extremely bullish about the long-term prospects of a club that picked up just one victory last season.
The five-time premiership winning Hawk feels the GIANTS will still have their difficulties in 2014 and "won't set the world on fire in the win-loss column".
He feels they could win between four and six games this year and will benefit greatly from the additions of Shane Mumford and Josh Hunt.
But in a few short years, Brereton is adamant Treloar, Stephen Coniglio, Dylan Shiel and the rest of the talented GIANTS will be standing alone at the head of the competition.
"To me, they are the best collection of what I would call junior AFL talent I've ever seen," he said.
"They've got five or six midfielders who a team like Hawthorn would cut off an arm to get hold of.
"If just one of those players was at Hawthorn, we would be knocking down the doors of all the media outlets in Melbourne to do a story on him and say 'This is the future of our midfield'.
"If you're thinking about following a team, I'd be following the GIANTS, because the rest of our 17 teams will be chasing their tails in three years.
"I say to all my mates in Melbourne, have fun while you can at their expense, because in three years' time, you'll all be saying 'Why did we let them have so much?'"
