Newcastle United managing director Derek Llambias has launched a robust attack on Joey Barton in response to his critical comments regarding the club's bonus scheme.

The Queens Park Rangers captain recently explained that one of the reasons behind the Magpies' decision to place the midfielder on the transfer list was the 29-year-old's refusal to partake in a bonus proposal.

The ex-Manchester City player claimed that the hierarchy of the Premier League side were attempting to get the team to abide by the same bonus scheme offered to Sport Direct employees.

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

"It's also unfortunate that Joey chose to draw such a disparaging comparison between himself and employees of Sports Direct, who through hard work and dedication are the recipients of one of the most generous bonus schemes in UK retailing. It may not be a lot of money to Joey but over 2,000 Sports Direct employees earning £20,000 will receive shares worth over £44,000 over the next two years.

"However, in this week of all weeks we really do not wish to engage in a public war of words with Joey Barton. Our legal advisers are dealing with the matter now. We would encourage Joey to concentrate on his football at Queens Park Rangers. Our full attention this week remains firmly with the family and friends of Gary Speed."

Meanwhile, the North East club have announced that they will pay tribute to the late Wales manager before the Chelsea clash this Saturday.