CARLTON is 'disappointed' in Chris Yarran after his three-match suspension for striking Essendon's Paul Chapman, but coach Mick Malthouse says the Blues have already put the matter behind them.

Yarran was suspended by the AFL Tribunal on Tuesday night for a left-hand punch in the first quarter of Saturday's loss to Essendon, which left Chapman with a facial cut and saw him taken from the ground for 20 minutes to be assessed for possible concussion.

The dashing half-back will be a huge loss for the Blues as they seek their first win of the season this Saturday against St Kilda in Wellington.

But Malthouse told reporters on Wednesday the Blues would take no further action against Yarran.

"It's behind us. Chris made his thoughts very clear and we're all disappointed that he's not playing," Malthouse said.

"I don't think there has to be a message. The AFL has delivered a message (at the Tribunal)".

In addition to having to select a replacement for Yarran, the Blues will have to monitor the fitness of full-back Michael Jamison in the lead-up to Anzac Day.

Jamison aggravated his troublesome shoulder in the Blues' loss to Essendon, with Dr Peter Larkins telling AFL.com.au the key defender had suffered a partial dislocation.

Malthouse expected Jamison would recover in time to take on St Kilda, but said the Blues would take an extended squad to New Zealand when they fly out on Thursday.

"It's a road trip no further than Perth, so we're not going to LA, but there are all sorts of logistical problems with international travel, so we really are compelled to take a number of players with us to cover things that could take place," Malthouse said.

"It is a difficult logistical problem to make sure we have the best 22 run down the race given that we can't err on (being) hopeful we can get games into some blokes.

"We might have to say there are a couple of blokes or three blokes who mightn't even play.

"That's to cover blokes like Jamison who is a little bit sore, (but) should train … we're hopeful. And that's the same with two or three other players.

"You've just got to make sure you've got it covered because otherwise one of our coaches will be running down the race and that's an ugly sight."

Troy Menzel is one of the other Blues in doubt for Saturday's game, with Malthouse saying the forward had to pass a fitness test on Wednesday to play.

The three-time premiership coach said the Blues would fly Kristian Jaksch to Wellington as cover for Jamison, while Matthew Dick, Dylan Buckley and Dillon Viojo-Rainbow were among the candidates to replace Yarran.

Carlton's first selection in last year's national draft Blaine Boekhorst is yet to make his AFL debut and Malthouse suggested he had work to do before he did so.

"He's a 25-possession player from the weekend (in the VFL but) he still needs weight and he needs consistency," he said.