Carlton could blood three more debutants in Saturday's Anzac Day clash with St Kilda in Wellington.

Mark Whiley, Matt Dick and Blaine Boekhorst have all been named in an extended 25-man squad.

Whiley was traded to Carlton from Greater Western Sydney last year, after playing 12 AFL games for the Giants.

The 22-year-old impressed for the Northern Blues last weekend, gathering 28 possessions against Williamstown.

Carlton secured Dick as a delisted free agent after the 20-year-old spent two seasons with Sydney.

Meanwhile Boekhorst, a 21-year-old from Western Australia, was the Blues' first-round draft selection in the 2014 National Draft.

The Blues have retained Cameron Wood in the ruck, while Kristian Jaksch is a chance to return from injury.

Chris Yarran has been ruled out through suspension, while young Irishman Ciaran Byrne will miss the game after straining his hamstring at training.

Carlton's final 22 will be named on Thursday evening.

Carlton's extended squad to face St Kilda (three to be omitted):

Backs17. Sam Rowe40. Michael Jamison42. Zach Tuohy
Half-backs6. Kade Simpson15. Sam Docherty1. Andrew Walker
Centreline27. Dennis Armfield5. Chris Judd33. Andrejs Everitt
Half-forwards28. Tom Bell41. Levi Casboult46. David Ellard
Forwards3. Marc Murphy (C)14. Liam Jones23. Lachie Henderson
Followers36. Cameron Wood4. Bryce Gibbs44. Andrew Carrazzo
Interchange12. Blaine Boekhorst7. Dylan Buckley35. Ed Curnow
 9. Patrick Cripps18. Kristian Jaksch31. Matthew Dick
 24. Mark Whiley  

In: Buckley, Jaksch, Dick, Whiley, Boekhorst.

Out: Yarran (suspended), Byrne (hamstring). 

Milestone: Andrejs Everitt - 100 AFL games.