Tuilagi agreed a new two-year contract with Leicester this week and Jones added: 'Manu's future is looked after and we're really happy for him. He'll be ready by the World Cup.
"It is the last week of the tournament so it's exciting".
In the backs, Jack Nowell replaces Joe Cokanasiga on the right wing and Henry Slade replaces Ben Te'o who drops to the bench. I don't need to reveal my selection plans for the future but I do know he'll be ready for the World Cup.
"He's a young player and we don't need to rush him, we need to bring him through carefully, he's got a long career ahead of him".
"I've had reasonable experience in doing this and sometimes you let them go, and sometimes you've got pull them back a bit". I've got him on the right track.
"We just feel it's right for him not be involved in matchday squad but he'll still learn from being around the squad".More news: Aussie politician claims Muslims are responsible for New Zealand shootings
More news: Bryce Harper Injury: Phillies Star Leave Game After Getting Hit By Pitch
More news: Chicago Muslim groups step up security after New Zealand mosque attacks
Jones has reverted to his first-choice midfield, with Manu Tuilagi and Henry Slade paired in the centres.
'The improvements will come in his speed, power, timing, his running lines. "He will be a real handful for Scotland this weekend", Jones said.
In two other changes Ben Moon comes in for Ellis Genge in the front row while flanker Mark Wilson starts in place of Brad Shields. A victory for Wales would secure a Grand Slam for Warren Gatland's men, while Ireland also has a chance of retaining the Six Nations title if it triumphs in Cardiff. "It will be a fascinating finish too, with the three teams that can win it and we are playing against one of our most traditional foes in Scotland", said Jones.
Ben Youngs will make his 85th appearance to surpass the England record for a scrum-half held by Danny Care. 'When they're blown up to be something they're not, it's hard for them, so that's part of it. Joe's a very good kid, but the media can turn anyone's head.' So, how had Cokanasiga taken the news of his demotion? "I am sure he will do the shirt great justice out there on Saturday", said Youngs.