Collingwood utility Tyson Goldsack spoke to the media before Friday's training session at the Westpac Centre.

Goldsack praised the way that Harry O'Brien has responded to a difficult few weeks, gave journalists an insight into the sort of player debutant Brodie Grundy might become and had a chuckle when asked about Geelong champion Matthew Scarlett's criticism of Nick Maxwell in his soon-to-be-released book.

On O'Brien, who is returning from a three week absence, Goldsack said that he is "back to full spirits now" and has remained "professional" whenever he has been at the club.

Goldsack says that Grundy will "have a crack."

"We know what we'll get from him. He wins his own ball and we know what to expect from him."

The No. 6 labelled Grundy a "lateral thinker", and says to "jump on his Instagram which tells a story in itself."

When asked about Scarlett's criticism of Maxwell in his autobiography, Goldsack said that he hadn't read the comments but from what he's heard, he "won't rush out and buy the book. I can't imagine it will matter much to 'Maxy'".

Goldsack was also pleased with the way the Magpies have trained this week, citing the team's session up on the Gold Coast on Monday as a particularly good day on the track.

Journalists asked about the team's poor conversion in front of goal in the loss to the Suns and while conceding it was poor, Goldsack said that the blame should not just be directed at Travis Cloke.

He said that the team is looking to "clean up defensively a little and just work on our skills going forward."