Leeds Rhinos Chief Executive Gary Hetherington has issued the following statement on Zak Hardaker.
"Brian McDermott and myself have now had the opportunity to discuss the matter with the England management and with Zak himself and we now have a better understanding of the events leading up to Zak's departure from the England squad.
We believe Zak acted unprofessionally and in doing so, breached the Leeds Rhinos Player Code of Conduct.
As a result, the Club have issued him with a written warning and imposed a fine of £2,500.
We are satisfied the matter has now been dealt with and Zak will report for training on 25th November. We will continue to monitor Zak's future conduct and help him deal with his own issues; which are more to do with a lack of professionalism than anything else.
Zak has apologised for the embarrassment caused to his family and Leeds Rhinos and he is desperately sorry for the situation he finds himself in."
Hardaker, 22, commented, "I have paid a heavy price for my own actions and will now miss out on my dream of helping England win the World Cup. I am sorry for any embarrassment I have caused and my focus now is on moving forward next season and putting these events behind me. I would like to wish Kevin and the England team the best of luck for the rest of the tournament and I am looking forward to the start of pre-season with the Rhinos."
Forty clubs hit the trophy trail this weekend - January 31 and February 1 - as the first round of Rugby League's oldest and most prestigious competition, the Ladbrokes Challenge Cup, is staged across the country.