Heisman Trophy winner Johnny Manziel of Texas A&M did not finish his scheduled stay as a college coach/counselor at the 2013 Manning Passing Academy because he missed assigned meetings and practice sessions, apparently due to illness.

Some Internet reports have stated Manziel had been sent home by Archie Manning because of "partying," but camp officials were adamant those reports were inaccurate.

On Sunday, Paul Manziel told The Dallas Morning News his son was resting as he recovered from dehydration. In a text to the newspaper, Manziel's father said the quarterback was not football-ready but feeling better.

A camp spokesman released the following statement from the Manning Passing Academy, which was held at Nicholls State University in Thibodaux, La.

"Johnny Manziel did participate in some activities in the 2013 Manning Passing Academy as a college counselor/coach," the statement said. "After missing and being late for practice assignments, Johnny explained that he had been feeling ill. Consequently, we agreed that it was in everyone's best interest for him to go home a day early."

It was Manziel's first appearance as college coach/counselor at the passing academy after he had been a camper twice during his high school years.

"I enjoyed meeting Johnny," said Broncos quarterback Peyton Manning "I can remember a 20-year-old Eli [Manning] missing a meeting [at camp] and catching some flak. We always have counselors who leave early. Johnny was great with the campers for the time he was here. He had to leave early. I wish him the best and I want him to come back as a counselor next year."

Manziel could not be reached for comment. He apologized privately to camp officials for being unable to fulfill his commitment.

The Manning Passing Academy, in its 18th year, began Thursday evening and wrapped up Sunday morning. Manziel went home Saturday afternoon after missing the morning session.