Rangers face having to pay off the remainder of Joey Barton's £2m contract if they cannot find grounds to sack him, reports claim.
The controversial midfielder's Ibrox career appears all but over after he was told not to report back for training on Monday morning.
Barton is on the eve of completing a month-long club suspension but Rangers have now confirmed he has been told to stay away for another week while further disciplinary action is considered.
The club said in a statement: "Joey Barton has been informed that his suspension by the club has been extended by one week.
"This is part of a formal disciplinary procedure and Joey has been instructed not return to Ibrox or Auchenhowie (training ground) until further notice.
"Neither party (the club and player) will make any further statement or comment."
The player and his representatives are now awaiting further instruction but it is almost certain he will not be seen again in a Rangers kit.
He signed a two-year deal in July worth £20,000 a week and unless Rangers decide to dismiss him, Barton will demand the balance of his contract is settled before moving on.