Mitch McGovern's move to Carlton could signal the end of Levi Casboult's career at the Blues.
The club has informed Casboult they are willing to trade him should he find a club interested in his services.
Casboult's position in the Blues lineup could be under jeopardy, with the emergence of young stars and the recruitment of McGovern adding depth to the Blues key forward stocks.
Harry McKay and Tom De Koning appear to have bright futures at the club, while Charlie Curnow has emerged as one of the brightest young talents in the game.
"They're happy to entertain something," Casboult's agent Anthony McConville told AFL.com.au.
"Right now I'd say he's more likely to be staying than going, but we'll know more in the next few weeks."
Casboult managed only 12 goals in 10 games in 2018, having broken a rib midway through the year and then dislocating his finger upon returning to the team.
The 28-year-old remains contracted to the Blues in 2019, having signed a two year extension in 2017.
He was the Blues leading goalkicker in 2017 with 34 majors.