Port Adelaide defender Matthew Broadbent will not play against Collingwood on Saturday afternoon at the MCG after failing to recover from an ankle injury.

Broadbent played in Port Adelaide's 40-point win over Brisbane last Saturday, but isn't fit enough to face the Magpies, with speedster Matthew White coming straight into the 22.

White will play just his second game for the season for the Power, after last featuring against the Giants in round four.

Broadbent will join Jared Polec on the sidelines for Saturday's game, after the midfielder suffered a hamstring injury in the dying stages of last week's clash.

Jasper Pittard has come into the side for the Power, who was dropped for the round 13 clash with Brisbane after a poor run of form.