The Brisbane Lions can confirm Collingwood defender Jack Frost has signed with the Club.

The Lions will receive Frost, this year's pick no. 76 and a future third round pick, in exchange for the Lions' future third and fourth round picks.

The athletic 195cm backman, who has played 54 games for the Magpies after coming off the rookie list in 2013, fell out of favour this season and didn't play senior football after round 12.

Frost finished the season in the VFL before suffering an ankle injury that ruled him out of the VFL Magpies’ preliminary final loss.

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Frost will slot straight into the Lions’ defence following the retirement of veteran Daniel Merrett and Justin Clarke due to on-going concussion symptoms.

List Manager Peter Schwab said that he was pleased to get the deal done, which will see Frost sign for three years.

“With Jack, all year we’ve been tracking key defenders,” said Schwab.

“At 24, even though he’s only had a little experience (54 games) he’s still got plenty of football ahead of him.

“He’s got great speed and is a good character, he’s a perfect fit.”