Fresh bid expected for Villa’s Konsa Arteta says existing players need to improve Arsenal are stepping up their efforts to sign defensive cover for William Saliba after Mikel Arteta revealed Jurriën Timber is well away from returning to competitive action. Saliba will be sidelined for an extended period after breaking down during the World Cup with a back injury . After Arsenal lost a second successive friendly when Borussia Dortmund won 3-2 on Sunday to lift the Emirates Cup in a performance t…