Strong set piece will be bedrock of new England, says Steve Borthwick

• ‘Challenge is to improve players before Six Nations’ says assistant coach • Decision to drop Barritt was difficult, says fellow assistant Paul GustardEngland’s players have been warned to expect a “challenging” period in the build-up to this season’s Six Nations when they start training with Eddie Jones and his management team. Jones and his assistants, Steve Borthwick and Paul Gustard, are particularly keen to crank up England’s forwards and ensure they hit the ground running against Scotland on 6 February.Borthwick and Gustard have worked with Jones before and have no doubt about the new h…