SUCH is the dearth of outsiders realistically challenging for the post-World Cup England team that Jack Rowell may be forced to postpone the necessary generation change longer than he would ideally want. This was the message of the manager's remarks at Twickenham yesterday when he repeated that he would not be hurried into either confirming or denying Will Carling as captain, though in deference to Carling's personal problems Rowell has decided tonight's first England session of the season at Marlow will be held in private. This had not been his intention before Will and Julia Carling separated, but then nor had it been his preference to continue with the old guard whom Carling has captained. The one selection certainty is that Rowell will restore a proper open-side flanker to the England back row and that will entail a direct confrontation between Ben Clarke and Dean Richards for the number eight position. As things stand, Rowell appears to favour Rory Jenkins, of Harlequins, over the perennial pretender Neil Back and he is also contemplating the inclusion of David Pears as the outside-half successor to Rob Andrew.