Owen Farrell faces a race against time to prove his fitness as fears grow over his availability for England's Calcutta Cup clash with Scotland at Twickenham on Saturday.
"The Daily Telegraph picked him for us and we decided we'd change our minds", he said of Vunipola's selection among the replacements after his recovery from injury.
Anthony Watson (Bath Rugby) and Billy Vunipola (Saracens) return to an England match-day 23 for the first time in this year's Championship having both recovered from injury.
"We will try to get the ball back as quickly as possible".
England are 80 minutes away from equalling the All Blacks' 18 match unbeaten run and despite their indifferent form this year, I can't see them slipping up when they are so close to writing their names in the history books.
Not only are they trying to send a well-oiled English chariot off into the ditch, but also end a 34 year wait for victory against England at Twickenham.
There has been plenty made of who is feeling the pressure more - Scotland for their chance to end that losing streak or England who have the chance to equal New Zealand's record of 18 consecutive Tier One Test victories if they win at Twickenham.
"We have another two games to go in this Championship and this next one is obviously pretty important".
"We have until tomorrow (Saturday) before kick-off to make a decision, which means he has at least another 24 hours of recovery ahead of him".
When it was put to Jones he had just said Farrell was a doubt, the Australian snapped back: "Yeah, but I think he'll be alright".
"They have struggled up to half-time in various games but they must be doing something right to have won 17 games in a row".
"That is very good under Eddie Jones, but they tend to win in variety of ways, good or ugly. It is within a very structured and organised, prescriptive game plan, but you can play really quickly and still be in position because it's a simple game plan".
However, they have not won in London since 1983.
Scotland now sit in third place in the Six Nations table and while they are now outsiders for the trophy behind England and Ireland, an unexpected victory in what has been a much-improved campaign from Cotter and Scotland will see that all change going into the last weekend. The record was set recently, from August 2015 to October 2016.
Elliot Daly can come in to 13. "Ben Te'o can play 12, he's an exceptional player, so there's no risk for us".