National Rugby League players "will be banned from training with NFL clubs under a newly proposed rule and risk being banished from returning to rugby league if they ignore the new policy," according to David Riccio of the Sydney DAILY TELEGRAPH. Club CEOs have "called for the new clause to be included in every contract which will stop players from risking injury and also using the NFL as a marketing tool to increase their asking price." NRL CEO Todd Greenberg has "backed the stance," which was raised at a CEOs conference on Wednesday. Under the new rule, North Queensland player Jason Taumalolo and Cronulla Sharks player Valentine Holmes "would not have been allowed to attend an NFL testing camp last month" in L.A. Greenberg said, "The clubs have made it clear that they don't want their players going to another code, including NFL, and risking serious injury. That is a view the NRL shares -- we don't support players going off to play with or promote other codes." The new NFL clause would sit alongside a current rule "blocking testing their ability" in rugby union and AFL. Greenberg added, "We already have a clause in place prohibiting players going to play rugby union and AFL mid-contract and that will be extended to include NFL. It is great to see NFL clubs recognizing what great athletes are produced in the NRL. But at the end of the day, they are paid to play Rugby League so we cannot let them risk injury and promote another code while they are registered with the NRL" (DAILY TELEGRAPH, 12/8).