Carlton could provide discarded St Kilda defender Matt Maguire with an AFL lifeline, according to his former teammate Robert Harvey, one of the Blues' assistant coaches.

Harvey, who has been promoted to a full-time assistant coach after serving last season as development coach, said Maguire could be invited to train with the Blues in the lead-up to the national and pre-season drafts.

Maguire, 25, was delisted recently by the Saints after failing to add to his 99 career games in 2009 despite overcoming serious leg injuries.

Harvey, who played a club record 383 games for St Kilda before joining Carlton, said the Blues would consider inviting Maguire for a trial.

"We'll consider maybe asking Matty Maguire to train with us, but (as for other players delisted by clubs) ... we're pretty happy with the list we've got," Harvey said as the Blues began pre-season training.

"We cover most bases with young guys, we think, and the holes that we have got we think we're capable of covering them."

Carlton's biggest challenge when it comes to covering holes will be who to use as targets in attack in 2010 after Brendan Fevola was traded to the Brisbane Lions.

Fevola topped the Blues' goal kicking from 2003-09, twice won the Coleman Medal as the league's leading goal kicker and bagged 89 majors in 2009, after 99 in 2008.

Harvey said Carlton's re-think was not just a case of replacing Fevola with another player.

"Obviously you can't just replace a guy that kicks the amount of goals that he does," he said.

"It will be more of a restructure of the whole set-up and that's another thing that we're excited about.

"You don't replace that guy. You can't replace 100 goals a year, but three or four guys possibly can and that's what we'll be looking at.

"It might make us more unpredictable and we hope that's a good thing ... there will be some restructuring, but who or what that is we don't know yet."

Harvey will work alongside Mark Riley coaching Carlton's midfield and admitted he would consider pursuing a senior coaching role in the future.

"The first year was good and I really enjoyed it and this year is another step up responsibility-wise," he said.

"I've enjoyed every part of it and at the moment it's something I'd certainly look at down the track."

Former North Melbourne and St Kilda ruckman Matthew Capuano replaces Harvey as Carlton's full-time development coach after serving as a part-time ruck coach last season.