Just when we thought James Arthur and Professor Green had reached a comfortable truce, the shamed former X Factor winner has launched a new attack on the rapper.

Speaking to The Sun, J-Arth alleged that material he created has been kept on Pro's track Little Secrets - despite him being given the chop from it.

"I've been extremely understanding with the decision to remove me from the track, given the coverage I received last year when I recorded the song," he said.

"But to hear my work plagiarised by another vocalist upsets me."

Arthur was bumped from the collaboration after a series of gaffes, including sharing a rap with homophobic lyrics online.

And a source in the Green corner apparently contradicted the allegation.

The mole told the paper: "Little Secrets was written two years ago. It existed before Stephen was even introduced to James."

It could all get sorted out in court however, since Arthur is apparently considering legal action over the matter!