by FOXSports.com

The Bengals wide receiver is set to have ankle surgery Wednesday, according to an NFL.com report, but is expected to be ready for training camp.

Johnson fully participated in drills for the first time Saturday as the Bengals wrapped up their minicamp.

The disgruntled receiver limited himself to a few drills during workouts on Thursday and Friday, complaining through his agent about the ailing ankle. He looked fine during a workout on Saturday, catching passes from Carson Palmer.

He declined to talk to the media again, other than to say "Vote for Obama" as he walked off the field — apparently throwing his support behind Democratic presidential candidate Barack Obama.

Johnson has been lobbying for a trade since the Bengals went 7-9 last season and fans grew weary of his complaints that he's no longer appreciated in Cincinnati. The Bengals refused to deal him, and Johnson threatened to sit out the season. He didn't attend any of the team's voluntary workouts.

He faced a fine if he didn't attend the mandatory, three-day minicamp. Although he showed up for the first day of workouts on Thursday, he barely participated. At the time, agent Drew Rosenhaus said Johnson was bothered by a sore ankle that might need surgery.

The Bengals later said Johnson had an ankle problem last season. The team had urged him to get it surgically cleaned out after the final game, but he chose not to do so.

Johnson was downcast and had little interaction with teammates during the first day of workouts. He was more upbeat the last two days.

Offensive coordinator Bob Bratkowski talked to Johnson at the end of Saturday's workout.

"He's rusty," Bratkowski said. "I told him he looked rusty. Nobody likes to hear that. He's going against guys who have been out here for 14, 16 (voluntary) practices, you know. You're going to look that way."

The Associated Press contributed to this report.