The former Celtic defender says the Rangers signing is bitter that he was not sought after by the Bhoys.
Former Celtic defender Tom Boyd has stoked the war of words with Rangers signing Joey Barton by claiming that the midfielder is jealous that Brendan Rodgers did not make an approach to sign him, as quoted by the Scottish Sun.
Barton joined Rangers on a free transfer from Burnley last month after rejecting a new deal at Turf Moor, and has been talking the talk since he signed on at Ibrox in Glasgow.
Shortly after his arrival the 33-year-old stated that he wanted to establish himself as the best player in Scotland, and in the weeks since that comment he has turned his attention to Celtic.
The former Newcastle United and Manchester City man aimed a dig at new Hoops manager Brendan Rodgers before talking down the qualities of Celts captain Scott Brown by claiming the midfielder is "nowhere near" the level of player that he is.
Boyd believes that these slights show that Barton is simply bitter and jealous that it was only Rangers who came in for him and not Celtic, suggesting that he would rather be playing for the green-and-white side of Glasgow.
The former Celtic defender said, as quoted by the Scottish Sun: "Joey’s certainly saying a lot before the campaign even starts. I think it’s spurred by a bit of jealousy because Brendan never came in for him. We know he’s a big Hoops fan because he’s said so in the past. I think he’d rather be pulling on the hoops rather than a blue jersey.
"So his comments about Scott are probably down to him being annoyed that he’ll be playing against Broony rather than alongside him. I don’t think you can say Joey doesn’t know what he’s let himself in for with the whole Old Firm thing.
"Of course, what he’s said has put more pressure on himself to perform but this isn’t the first time he’s said something controversial. Everyone’s getting it. Maybe he’s just desperate for the football to get started again. He probably hates the close-season."
It will certainly be interesting to witness the first match-up between Barton and Celtic, particularly the feisty midfield battle which is certain to ensue between him and Brown.
Barton has become accustomed to hostile receptions from opposition supporters - he would likely argue that he thrives off them - but the animosity he is sure to face from the Parkhead faithful will be something else entirely.