Stuart Lancaster: England must deliver in autumn Tests However the 21 year-old, who made his debut on the summer tour to South Africa, starting the last two Tests, failed a lunchtime fitness test, which means that he will not be able to train again before the team announcement on Thursday. Brad Barritt and Manu Tuilagi are set to be the centre pairing. There was relief for Wasps" James Haskell after concerns that he might be cited for a dangerous tackle on Saracens lock Alistair Hargreaves in Sunday's Aviva Premiership match. Haskell escaped with what is known as a level-one citing which, in essence, is a retrospective yellow card. The same process did for Saracens wing Chris Ashton last week, only that incident amounted to his third yellow of the season, triggering a one-match ban for this Test. Lancaster acknowledged yesterday that Ashton needed remedial attention on his tackling technique, although he was at pains not to suppress the wing's natural enthusiasm. "One of Chris's great strengths is his competitiveness, his hunger for the ball," Lancaster said. He wants the ball all the time. We've got to get the best from him in that regard but tempered with the work he needs to do on his tackling. We've had chats about it, both the mental side of things as well as the technical. He's more disappointed than anyone at missing this game. He's frustrated as he stands there on one side of the field watching the match-day squad on the other side of the pitch preparing. Chris has got to deal with it, work on those two areas and make sure that he's ready for next week. Lancaster admitted that losing Ashton was a blow to the team's creative edge. "You cannot just manufacture finishers," he said. There aren't many world-class finishers around anywhere. We think we have two [Ashton and Ben Foden] but they are unavailable. Joe Launchbury, the Wasps forward, was also called in to train as precautionary cover for his club team-mate Tom Palmer, who has been troubled by a calf strain. Another late call-up, Gloucester fly-half Freddie Burns, also trained, but he will not feature this weekend unless there are further mishaps. If there are, Lancaster would not hesitate to put him straight into the fray. "The reality is that it only takes one injury and Freddie could easily be involved," Lancaster said. As it is, this is a good opportunity for Freddie to present himself against Toby Flood and Owen Farrell. Joe Marler, the Harlequins prop, is fit again after a hamstring problem so will start and there was encouraging news on Alex Corbisiero, a long-term absentee. The London Irish prop is set to play his first game of the season this weekend for his club. Northampton lock Courtney Lawes, is also expected to resume running by the end of the week after his recent knee injury. Lancaster knows his starting XV. It looks as if Exeter's Tom Johnson has won the blindside slot ahead of Haskell and Tom Wood, and will join Thomas Waldrom and Chris Robshaw in the back-row. Danny Care will partner Flood at half-back with Gloucester's Charlie Sharples stepping up for the suspended Ashton in a back three of Ugo Monye and, in all probability, Alex Goode. Akapusi Qera, the in-form Gloucester flanker, has been called in to the Fiji squad.