Joe Paterno was released from the hospital Sunday, a source has told ESPN's Joe Schad.
Paterno is resting at home but also continuing rehabilitation for a pelvis injury he suffered in a fall at home, the source said Monday. He also is continuing treatment for lung cancer.
The source told Schad the former Penn State coach does not like being immobile and that cancer treatments "are really taking a lot out of him.
"He is determined and he has not lost his spirit, but it's a lot to handle," the source said. "He has his good days and bad."
Paterno's tumor was showing substantial reduction following radiation and chemotherapy, a source told The Associated Press.
Paterno, who turns 85 on Wednesday, was admitted last week after breaking his pelvis again in a fall at home. Doctors kept him hospitalized to make it easier to administer cancer treatments while he recovered from the fracture.
He initially injured his pelvis and right shoulder in August after getting blindsided accidentally by a receiver during preseason practice. The injuries kept Paterno in the press box most of the season before trustees fired him Nov. 9 in the aftermath of child sex abuse charges against retired assistant coach Jerry Sandusky.
Paterno testified before a grand jury investigating Sandusky, but prosecutors have said he is not a target of the investigation. Sandusky, who has pleaded not guilty, is awaiting trial.
Paterno hasn't spoken publicly since his firing. He was diagnosed with cancer several days later during a follow-up visit to the doctor for a bronchial illness, his family has said.
Earlier Monday, Penn State fullback Michael Zordich said a few players visited Paterno in recent weeks.
"He's a strong person, a fighter, a leader," Zordich said before practice. "He's been going through a lot right now ... We're giving him space, and we'll go see him when we can. Hopefully we can get there soon."
Longtime defensive coordinator Tom Bradley said he has not spoken with Paterno since the day after he was appointed the interim head coach. Bradley, who is applying for the job permanently, gets updates from Paterno's son, quarterbacks coach Jay Paterno.
"I know what (Joe Paterno) is going to say -- 'Tom, you're wasting your time. You know what you've got to do,' " Bradley said Monday.
Paterno has called the allegations against Sandusky troubling and urged the public to let the legal process unfold. He initially announced his retirement taking effect at the end of the season.
In his retirement statement, Paterno called the scandal "one of the great sorrows of my life. With the benefit of hindsight, I wish I had done more." The trustees fired him anyway, about 12 hours later.
The Nittany Lions' coach for 46 seasons, Paterno amassed 409 career victories -- a Division I record.
Information from ESPN college football reporter Joe Schad and The Associated Press was used in this report.