WEST Coast ruckman Scott Lycett has been dropped for Saturday's clash with the Brisbane Lions for disciplinary reasons.

Lycett did not travel with the team on Thursday.

Eagles coach Adam Simpson said the big man had been dropped for failing to meet the standards set by the club's leadership group, players and coaches after the Eagles' loss to Adelaide last Saturday night.

"We are very disappointed that Scott has let the club down, but the behaviours we ignore are the behaviours we accept," Simpson said at the airport on Thursday.

"We have standards and values that we expect of each other, and Scott, unfortunately, failed to meet them."

Simpson did not elaborate on Lycett's indiscretion.

"I won't go into detail," he said.

"I'm not going to make too much of a song and dance about it. He's let us down. We move on this week and he'll play for East Perth (in the WAFL)."

Lycett was due to take over the No.1 ruck role this week after Nic Naitanui was ruled out for the next six-to-eight weeks due to surgery on inflamed tendons near both Achilles tendons.

Simpson had said on Wednesday that it was a big opportunity for Lycett to take on a bigger ruck load. But he will not play this week for disciplinary reasons.

The Eagles' ruck depths will be severely tested as a result. Jonathan Giles is the only 200cm-plus ruckman on the list and will play his first game for his fourth club against the Lions.

Giles played one game in the NAB Challenge and has averaged 24 hit-outs, 10 disposals and three marks in 11 games in the WAFL this season.

Giles played 51 matches for Greater Western Sydney between 2012 and 2014 before he was traded to Essendon. He played three games for the Bombers last year before he was traded to the Eagles in October.