QPR skipper Joey Barton has continued his row with Newcastle United powerbrokers Mike Ashley and Derek Llambias.

Llambias dismissed an initial attack by Barton yesterday, at the same time questioning the QPR man's timing.

Llambias said: "In a week when one of Newcastle United's most beloved footballers passed away, it is disappointing that once again Joey Barton makes the headlines."

However Barton took to Twitter to vent his frustrations at the statement.

He wrote: "Seen Llambas [sic] comments, he is crass and has no class. I'll leave it for another day but if he wants to take a polygraph live on tv, lets do it," before adding, "Not only do I have insurmountable amounts of proof (texts etc) but also about 6 others players who will concur. Am ready when u r Derek..."

Then, Barton, in a clear attack on Newcastle owner Mike Ashley, added: "If he's worried now, him and his fat mate should be ******** it, if I decide to write a book. There'll be no holding back on those 2 muppets."