The Loftus Road skipper has been handed down a 12-match ban from the FA for his dismissal against Manchester City on the last day of the 2011-12 season, with his future now in severe doubt.
However, the outspoken Irishman has taken the opportunity to damn Barton further.
“I never rated Joey Barton that highly as a player. I played against him when he was younger and he never stood out for me,” Keane stated in his column in The Sun.
“Since then, I have never seen him dominate a game — or be the difference between two sides.
“And because his footballing ability is never going to get the headlines, he seems determined to get attention by whatever means necessary.
“He seems to thrive off people having a go at him and then having a pop back. Maybe I should open a Twitter account to keep him happy.
“But after landing a 12-match ban for his carry-on at Manchester City on the final day of the season, rather than just lashing out at anyone who criticises him, maybe he should consider keeping quiet and going about his business.
“Because the reality is that he has become a liability for QPR,” he concluded.
By Gareth McKnight