Sherman enjoyed a dream first two years at the Gabba, playing 19 games and earning a Rising Star nomination in his debut season of 2005 and then playing every game and finishing second behind Simon Black in the club champion award in 2006.
But his young career hit its first significant speed bumps this year, when he was squeezed out of the side and then suffered a foot infection.
"My philosophy on footy is that you never stop learning – and I really learned a lot out of last year," Sherman told lions.com.au.