England must sort off-field politics to fulfil potential, says Eddie Jones

• Head coach wants the RFU and clubs to work together• Jones admits to over-training players during Six NationsEddie Jones has claimed England will struggle to enjoy consistent success on the world stage unless the “battleground” of off-field politics is properly addressed. The head coach also believes the English game is being “held back” by tradition and is still not fulfilling its potential.With less than three months to go until the Rugby World Cup kicks off, Jones remains focused on guiding his adopted country to success in Japan but his exasperation with the club-v-country tensions withi…