The Knights have made him an offer he (and his manager) is not happy with.
When I look at our junior ranks I see why we arn't prepared to give him big money to keep him. There are 10 young props aged between 16 and 19 who all look like they will make the grade in the next few seasons. He is already being challenged by guys like Woolnough, Price, Jobson and Matt Kennedy, but young giants like Dane Tilse and Kade Snowden will be putting the pressure on him soon as well.
Tilse is 6'6" and 110 kg - not bad for an 18 yo. The other day in Premier League he had four defenders hanging off him for about 10 metres. A powerful running prop of the future.