Carlton captain Marc Murphy looks likely to play against Fremantle in Perth this weekend, despite copping a heavy knock to the head in last Saturday's loss to the Western Bulldogs.

Murphy trained in a helmet yesterday, and may indeed play in one, after having staples in his head to treat the severe laceration he suffered after a knee from Bulldog Jordan Roughead.

"We know Murph is tough in and under and he's a real hard gut runner so he's important to us and he'll be fine," coach Brendon Bolton said.

Bolton says discarded forward Liam Jones is a chance to come into the side to face Fremantle on Sunday, as the Blues look to address their inability to score.