Three Leicester Tigers players retain their places in England's training squad ahead of the upcoming QBE Internationals and the Rugby World Cup.Tigers front-rowers Dan Cole and Tom Youngs, plus scrum-half Ben Youngs, are among the 39 players chosen by head coach Stuart Lancaster to report to England’s training base at Pennyhill Park on Sunday to resume their preparations.   Eight players – Chris Ashton (Saracens), Lee Dickson (Northampton Saints), Kyle Eastmond (Bath Rugby), Matt Kvesic (Gloucester Rugby), Matt Mullan (Wasps), Semesa Rokoduguni (Bath Rugby) and Marlard Yarde (Harlequins) – will be heading back to their clubs.   Lancaster said: “We had a great two-week camp in Denver where the entire squad worked extremely hard and were exceptional in the way they went about the training.   “That has continued this week and competition for places has been very intense.   “It has been difficult to narrow down the squad as everyone has contributed and given their all. But what I have said to those guys who are not coming back in on Sunday is that the door is not closed by any means.” The Tigers trio sit out the opening warm-up fixture at home to France this weekend, with the return fixture in Paris next week.   England training squad Dave Attwood (Bath Rugby)  Brad Barritt (Saracens)   Kieran Brookes (Northampton Saints)  Mike Brown (Harlequins)   Sam Burgess (Bath Rugby)  Luther Burrell (Northampton Saints)   Danny Care (Harlequins)   Danny Cipriani (Sale Sharks)  Calum Clark (Northampton Saints)  Dan Cole (Leicester Tigers)  Alex Corbisiero (Northampton Saints)  Luke Cowan-Dickie (Exeter Chiefs)  Nick Easter (Harlequins) Owen Farrell (Saracens)   George Ford (Bath Rugby)   Jamie George (Saracens) Alex Goode (Saracens)    James Haskell (Wasps)  Jonathan Joseph (Bath Rugby) George Kruis (Saracens)   Joe Launchbury (Wasps) Courtney Lawes (Northampton Saints)  Joe Marler (Harlequins)   Jonny May (Gloucester Rugby)   Ben Morgan (Gloucester Rugby)  Jack Nowell (Exeter Chiefs)   Geoff Parling (Exeter Chiefs)  Chris Robshaw (Harlequins)   Henry Slade (Exeter Chiefs)  Billy Twelvetrees (Gloucester Rugby)  Mako Vunipola (Saracens)   Billy Vunipola (Saracens)  Anthony Watson (Bath Rugby)  Rob Webber (Bath Rugby)   Richard Wigglesworth (Saracens)  David Wilson (Bath Rugby)  Tom Wood (Northampton Saints)  Ben Youngs (Leicester Tigers)   Tom Youngs (Leicester Tigers)