England coach Eddie Jones believes he has 80 per cent of his World Cup squad locked down but remains hopeful of unearthing a hidden gem before the 2019 tournament in Japan.
The Australian has been in charge of England since their miserable showing as World Cup hosts in 2015, and has won 20 of his 21 matches at the helm – his only loss coming against Ireland in the Six Nations.
Jones has consistently looked for different options to give him the best possible chance of leading England to glory in Asia.
His latest training squad ahead of the November internationals with Argentina, Australia and Samoa included the uncapped duo Marcus Smith and Tom Dunn - while Jack Clifford has replaced the injured Billy Vunipola.
Smith and Dunn have caught the eye in the Premiership this season and Jones intends to keep giving untested players a chance to shine.
"What I'd like to find is like a Nehe Milner-Skudder someone like that, [who] just comes out of the blue and gives you something different in a World Cup year," the coach told the England Rugby website.
"I reckon now we've probably got about 80 per cent of the squad about right but we're looking for that X-factor rookie to come out and there is a place for that sort of player.
"It might be someone like Marcus Smith, who knows?"
One thing Jones has no intention of changing is England's style of play, which may not be as flamboyant as the All Blacks but can still be effective.
"Just because it's popular, it doesn't mean it is right," he added.
"Spending your whole life on your phone is popular but that doesn't mean it is right.
"There is a certain sort of rugby we need to play to win the World Cup and it is not going to be popular rugby – we'll play the rugby that suits us.
"We're going to play our own rugby, we don't need to copy New Zealand."
|Neymar backs Tite for Brazil despite World Cup failure|
|Vinicius wants to play with ´idol´ Neymar but Perez calms transfer talk|
|One hundred not out for Els at The Open|
|Magnificent Maharaj takes eight wickets to stymie Sri Lanka|
|If I lose I´ll go down swinging - McIlroy ready for Carnoustie battle|
|UEFA confirms AC Milan reinstated to 2018-19 Europa League|
|Fleetwood: Open Championship is the one for me|
|Canberra coach Stuart brands bunker ´waste of time´ after controversial Cronulla loss|
|Son signs five-year Tottenham extension|
|Fleetwood cards fine 65 to share Open lead|
|WATCH: Evra belts out Bocelli in Ronaldo welcome video|
|I´ll always carry Roma in my heart, says Liverpool signing Alisson|
|CAS overturns AC Milan´s Europa League ban|
|McIlroy and Johnson on the move as Woods troubles Carnoustie spectators|
|Caleta-Car race won by Marseille|
|Hurricanes hold off Chiefs to reach final four|
|Bairstow: Unfair to compare England Test and ODI teams|
|Criticism is a weapon of the weak – Dani Alves defends Neymar|
|Thomas drops shot as McIlroy endures testing morning|
|Hazard is Chelsea´s best player and we need him – Fabregas|
|Mercedes & Bottas agree multi-year deal|
|Neymar backs ´genius´ Ronaldo to make Serie A great again|
|Sanchez to face San Jose Earthquakes as Mourinho grows desperate in attack|
|Ibrahimovic to watch England at Wembley – Zlatan will honour Beckham bet|
|Cubs use five-run fifth inning to trump Cardinals|
|Manchester United 1 America 1: Mata salvages draw for Red Devils|
|Steelers´ Super Bowl window getting smaller - Brown|
|Neymar cares about PSG and will stay amid Real Madrid speculation|
|NFL, NFLPA at ´standstill agreement´ over anthem policy|
|Guardiola: It would´ve been a mistake for Jorginho to join City|
|Angels star Ohtani cleared to resume pitching|
|´I don´t give a f***´ – Cousins hits back at critics after Warriors move|
|Merritt leads Barbasol Championship|
|Ruud awakening for Ferrer in Bastad|
|Nibali withdraws from Tour de France with back fracture|
|Fabinho: I´ll try to convince Mbappe to join Liverpool|
|Beating Messi boosted France´s World Cup belief – Lloris|
|Carnoustie saving the worst until last|
|McIlroy´s youthful exuberance could be a bad sign for Carnoustie contenders|
|Saints triumph at second-placed Wigan|
|Anfield atmosphere sweetened Alisson on Liverpool|
|Bouchard reaches Gstaad quarter-finals|
|´What are you waiting for?´ - Alisson reveals Salah text messages|
|´Full package´ Alisson could not be missed - Klopp|
|Alisson to Liverpool: Brazil star becomes most expensive goalkeeper in history|
|Alisson to Liverpool: Brazilian´s stats blitz Mignolet, Karius|
|Liverpool sign Alisson in world-record deal|
|The Open 2018 diary: Spieth´s got ball skills as Finau proves the scratch golfer|
|Woods: Score doesn´t reflect how well I played|
|Can we go to Paris now? - Thomas in a hurry after conquering Alpe d´Huez|
|Thomas: I could have finished stronger|
|Kisner shines at baked Carnoustie as McIlroy, Rahm and Thomas loom|
|Sarri´s mentality made me a better footballer - Jorginho|
|Tax rates played a role in Ronaldo joining Juventus, says LaLiga president|
|Aggressive McIlroy doing it his way, not the fairway|
|I let him have it - Spinazzola ribs Ronaldo over Juve shirt number|
|Thomas makes it back-to-back wins|
|Ramos may remain for Spain but Luis Enrique promising surprises|
|Cazorla still playing through pain after Villarreal appearance|
|Vegas to Carnoustie - a hellish trip for Jhonattan|
|NFL training camp 2018: Five under-the-radar rookies to watch|
|Woods off to a flyer as Thomas charges|
|Sanchez given green light to join Man Utd tour|
|Greipel, Groenewegen and Gaviria latest sprinters to abandon Tour de France|
|Luis Enrique hopeful over Pique as he plots a Spanish evolution|
|I had a brain fart - Spieth disappointed with missed opportunity|
|I´ve sacrificed too much to quit, says injury-plagued Rossi|
|Klopp rejects Henderson´s plea to return early to Liverpool training|
|Open champion Spieth loses ground in scrappy finish|
|Alexis Sanchez hints visa issue sorted as United States trip beckons|