A cagey Michael Voss has attempted to diffuse any concern over Charlie Curnow’s fitness after the star Carlton forward was involved in a heavy training collision.

The Blues coach has declared the dual Coleman medallist available for Friday night’s clash with St Kilda at the MCG.

Curnow will take part in Carlton’s captain’s run on Thursday in a bid to reassure medical staff he is fine to play.

Voss confirmed Curnow had collided with star ruckman Tom De Koning at training, but disputed reports the 28-year-old had an issue with his knee.

With Carlton coming off a thumping defeat to Adelaide, Voss was in no mood to discuss specifics around Curnow’s health.

“He’ll be fine,” Voss said on Thursday.

“The last 30 seconds of the drill, him and Tom had a nice little collision, so it’s not exactly what you want to see.

“I tried to have a bit of a laugh to fob it off, but holding his knee is incorrect.”

Voss also rejected suggestions Curnow had been receiving pain-killing injections in his knee to train and play.

“You don’t need to know specifics, let’s just say he’s playing.”

Voss also said key defender Jack Silvagni would return after missing the 60-point smashing by the Crows at Adelaide Oval.

Silvagni, who has been one of the Blues’ best players this season, broke his hand in the rousing win against Geelong a week earlier.