Eddie Jones claims England want to keep a lid on wing sensation Joe Cokanasiga and unleash him at this year's World Cup after dropping him from the team.
The England coach was speaking after he left the exciting wing out of his match-day 23 to face Scotland at Twickenham on Saturday, despite the 21-year-old being named man of the match in last weekend's victory over Italy
Bath's Cokanasiga produced a stunning demonstration of ball-carrying and broken-field running in the 57-14 thrashing of the Azzurri five days ago.
But his place in the starting XV has been taken by Jack Nowell and he is not included among the replacements.
Jones explained his decision was borne out of a desire to protect the starlet, claiming: 'Joe's a good, young player and we're looking after him... he'll feature very strongly in our plans for the future, but we just feel this week that Jack Nowell is our best player in that position.
'Joe becomes our 24th man. He's a young player and we don't need to rush him. We'll bring him through carefully and he's got a long career ahead of him.
'We've got a good plan in place for him. He'll be ready by the World Cup. I don't need to reveal my selection plans for the future but I do know that he'll be ready for the World Cup.
'I've got some reasonable experience doing this. Sometimes you let them go and sometimes you pull them back a bit.
'We just feel it's right for him this week to not be involved in the match-day squad. He'll still learn from being around the squad.'
Jones added that Cokanasiga will 'feature heavily' in England's warm-up games before the World Cup. The Red Rose take on Italy, Ireland and Wales (twice) before jetting off to Japan.
On Saturday, meanwhile, the return of Nowell is one of four starting changes. In midfield, Manu Tuilagi reverts to inside centre, with Henry Slade returning alongside him – as revealed by Sportsmail on Wednesday night.
The reunion of that partnership means that Ben Te'o has to settle for a place on the bench.
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'(Tuilagi's) future is looked after and we're really happy for him,' Jones said after the centre signed a new two-year contract with Leicester.
'The improvements will come in his speed, power, timing, his running lines. He will be a real handful for Scotland this weekend.
'This week it was Henry and Manu starting at centres. It's horses for courses. Scotland tend to pass the ball a lot more and we feel that Sladey's defensive qualities will suit the game really well.'
Up front, Exeter prop Ben Moon is restored as the starting loosehead, instead of Leicester rookie Ellis Genge, while Mark Wilson of Newcastle is recalled at blindside flanker.
Brad Shields, who wore the No 6 shirt last week, is among the replacements, along with fellow Wasps back-rower Nathan Hughes – who is also the designated lock cover.
Ben Youngs will become England's most-capped scrumhalf after being selected to start the match.
In making his 85th appearance, Youngs will move ahead of Danny Care on the all-time list.
England are looking to pip Wales to victory in this year's Championship, but know they must rely on Warren Gatland's side slipping up against Ireland in Cardiff if they are to stand any chance of lifting the trophy.
Jones said: 'It will be a fascinating finish to the championship with three teams that can win it and we are playing against one of our most traditional foes in Scotland for the Calcutta Cup.'
The title-winners will carry the bragging rights into the World Cup – and Jones admits this could be his last Six Nations, despite being under contract until 2021.
'That's not for me to decide,' said Jones. 'Other people decide that.
'I don't know. The only thing I know is that we have had a great week this week and we are absolutely excited by the prospect of us finishing well.'