ADELAIDE, AUSTRALIA - APRIL 21: Lachie Fogarty of the Cats tackles Riley Bonner of Port Adelaide during the round five AFL match between the Port Adelaide Power and the Geelong Cats at Adelaide Oval on April 21, 2018 in Adelaide, Australia. (Photo by Mark Brake/Getty Images)

Port Adelaide have confirmed that Riley Bonner will have surgery after an incident during Sunday's narrow win over Gold Coast.

The 25-year-old was involved in a collision during the second term, coming off second best with a fractured cheekbone and eye socket.

Bonner played out the match but the Power have confirmed he is expected to be sidelined for three to four weeks as he recovers.

Elsewhere at the Power, Zak Butters may be in line to make his return for this weekend's clash against Fremantle after missing Round 15.

The 21-year-old was sidelined with a sprained medial ligament in his left knee, missing the two-point win over the Suns.

Scott Lycett will resume full training this week after an extended period on the sidelines with a shoulder injury. The 29-year-old dislocated his shoulder in Round 4 and has not featured in the senior side since, with the club confirming he was nearing a return.

In other positive news for the Power, Darcy Byrne-Jones and Tom Clurey are both set to exit health and safety protocols this week and be available for selection.

Port are set to head to Western Australia to take on Fremantle on Sunday afternoon in a test to their finals credentials, with their extended team set to be released on Thursday evening.