ADELAIDE, AUSTRALIA - APRIL 13: Jack Ross of the Tigers tackles Scott Lycett of the Power during the 2019 AFL round 04 match between the Port Adelaide Power and the Richmond Tigers at Adelaide Oval on April 13, 2019 in Adelaide, Australia. (Photo by James Elsby/AFL Photos/Getty Images)

Port Adelaide ruckman Scott Lycett has been ruled out of Sunday's clash against the reigning premiers with an ongoing shoulder issue.

Lycett, who has managed just four games for the Power this season, underwent shoulder surgery in April and made his comeback in the SANFL over the weekend. The 29-year-old reported soreness in his shoulder in the aftermath and signs of infection were found.

The club has confirmed he will not be available for selection for at least Round 18, with the infection being assessed by medical professionals.

While Lycett's setback is tough going against the Demon's duo of Max Gawn and Luke Jackson, the Power could be strengthened by some returning players.

Defensive duo Trent McKenzie and Riley Bonner have both been cleared to play after spending time on the sidelines with illness and a cheekbone injury, respectively.

While Lachie Jones, who missed Round 17 with a hamstring injury, is facing a fitness test to determine his availability for the Sunday afternoon clash.

Port Adelaide currently only has one player on the long-term injury list, with young Jake Pasini sidelined after rupturing the anterior cruciate ligament in his left knee.

The Power will release their extended squad to make the trip to Alice Springs to take on Melbourne on Thursday.