LAS VEGAS (AP) — Lawyers for Floyd Mayweather Jr. say the undefeated champion boxer may never fight again if he’s not released from the Las Vegas jail he entered earlier this month.

The Las Vegas Review-Journal reports Mayweather’s lawyers filed an emergency motion Monday asking that he serve the remainder of his three-month jail sentence in house arrest.

Lawyer Richard Wright says Mayweather’s health is deteriorating by being confined to his cell 23 hours a day and restricted from working out. Jailers are keeping him from the general inmate population because of his celebrity status.

The motion says the boxer’s doctor believes the conditions could do irreversible damage to Mayweather’s physique.

Jail officials weren’t immediately available for comment.

Mayweather was booked June 1 for attacking his ex-girlfriend while two of their children watched.