Roy was struck on the neck during training on Tuesday and although the 29-year-old passed required concussion protocols on Wednesday, the England and Wales Cricket Board (ECB) has decided to have an extra option at the top of the order.
Willis ended his 90-match Test career with 325 wickets.
Images from Day 5 of the fourth Ashes Test, at Old Trafford, Manchester.
Broad, who has taken 414 Test wickets at an average of 29 since making his debut in 2007, responded by saying the criticism "lacked logic" and claimed that Vaughan had not "got much insight into the changing room".
Images from Day 1 of the third Test between England and India, at Leeds, on Wednesday.
The back to back Test series wins in Australia must rank as Ravi Shastri's greatest achievement as India's coach.
Wood's injury has created an opening for Saqib Mahmood's Test debut and Root did not rule that out.
Steve Smith continued his outstanding Ashes form, striking an unbeaten 60 as Australia recovered from another failure by their openers to reach 170-3 at the close of the rain-affected first day of the fourth Test against England.
England has agreed to host India for five Test matches, for the first time in 50 years, when the team lands in London for a long series which will also include five ODIs and a Twenty20 International next year.
England's Test captain Joe Root on Thursday said the "intolerable" Yorkshire racism episode has "fractured our game and torn lives apart" and pledged his support in a bid to bring about a change at his childhood club.
England paceman Stuart Broad believes his new ball partnership with James Anderson has improved a lot in the last two years with their perfect understanding of each other's role. Anderson and Broad shared 15 of the 20 Sri Lankan wickets to fall at Headingley where the hosts thumped Sri Lanka by an innings and 88 runs in the first test. "We've actually improved in the last couple of years," Broad, who turns 30 next month, told British media. "We've always been quite good in communicating, but we've taken that to a new level, realising when one of us in on a wicket-taking streak, the other one can apply pressure and not get too greedy, and vice versa."
After being widely condemned for their lame capitulation at Edgbaston in the first Test, suggesting a once-dominant team had hit rock bottom, this unlikely comeback was a stirring response.
Former captain Smith, who has endured boos from the home crowds for his role in last year's ball-tampering scandal but has responded by piling up 671 runs in five innings, said it was incredibly special to retain the Ashes in England, something Australia have not done for 18 years.
England fast bowler James Anderson has been ruled out for the rest of the Ashes series against Australia due to a niggling calf injury.
Skipper Joe Root, who led England to a series-levelling win at the Headingley, expects an Indian backlash in the penultimate Test and said they're ready for all combinations including facing the "world-class" R Ashwin at Oval.
Australia have brought back former captain Steve Waugh to help the squad prepare for the final stretch of the Ashes series against England as the tourists look to rebound from the painful third Test defeat at Headingley. Waugh had left the squad after the first two Tests as scheduled but has rejoined the group ahead of the fourth Test at Old Trafford, starting on Wednesday.
'There aren't too many guys... that have averaged higher than Steve in Test cricket. Clearly they are huge shoes to fill and we don't put all that pressure on Marnus'
India captain Virat Kohli on Saturday vowed to continue with five specialist bowlers despite their big defeat against England in the third Test but hinted at a rejig in attack for the fourth game by factoring in the workload of speed merchants.
Chris Woakes has replaced injured all-rounder Ben Stokes in the England squad for the second Test against Sri Lanka, the English Cricket Board said on Monday.
Ben Stokes' match haul of 254 runs and three wickets fashioned England's series-levelling victory against West Indies in the second Test on Monday, also earning him the player-of-the-match award.
Vihari, clearly hampered having pulled up clutching his hamstring after running for a single before tea, scored at a rate that made Pujara look like a limited overs slogger.
India registered its first Test win at the Mecca of Cricket.
England looked all but beaten when they stumbled to 117-5 in their pursuit of a 277-run target set by Pakistan in the first Test at Old Trafford but captain Joe Root felt confident about his team's battling qualities.
Steve Smith received a standing ovation for a fighting 92 at Lord's despite being struck on the neck by a Jofra Archer bouncer.
Steve Smith's domination of England's bowling attack in the Ashes series reached new heights on Thursday as his magnificent 211 led Australia to 497-8 declared on the second day of the fourth Test at Old Trafford.
Stokes plundered eight sixes in his astounding innings that fashioned a wholly unlikely one-wicket win for England, bringing the five-match series level at one-all, with everything to play for in the final two Tests.
England all-rounder Ben Stokes was named the 'Leading Cricketer in the World' in the 2020 edition of the Wisden Cricketers' Almanack, the publication said on Wednesday. The 28-year-old played a leading role in England's 50-over World Cup victory at home last year while his brilliant unbeaten knock of 135 helped the side to a thrilling one-wicket win over Australia in the third Ashes Test at Headingley.
Virtually ruling out Mohammad Yousuf and Younis Khan's return to the side for the series against England, PCB chairman Ejaz has said that Pakistan will continue to test youngsters in future matches to build a strong team for next year's World Cup.
Steve Smith and Marnus Labuschagne put on 116 for the third wicket before the latter was bowled by a beautiful delivery from Craig Overton for 67.
England needed to win four straight games to lift the trophy - which they did, winning the title after a tied thriller against New Zealand.
England's Ben Stokes has become a "world box-office attraction" with his Ashes heroics in the third Test against Australia and his life will never be the same again, former all-rounder Ian Botham said.
In the video, Archer plays a straight drive just like Smith and then he goes on to leave the ball in exactly the same manner as Smith.
'If he's looking to hit the ball and not leave the ball like he is I think he'd be fine'
Sri Lanka's victory in the first Test at Galle will rank among the greatest comebacks of all time.
Stokes smashed an unbeaten 135 to lift England to an improbable win at the Headingley.
It will be Ashwin's third county stint, having represented Worcestershire and Nottinghamshire in the past.
Brearley said that the 28-year-old had to make batting his top priority in the longest format of the game.
Michael Vaughan returned to the England team when the squad for the second Test against West Indies at Headingley.
India off-spinner Ravichandran Ashwin surged to the top of the MRF Tyres ICC Player Rankings for Test Bowlers after a superb outing in the first Test against the West Indies in Antigua which the visiting side won by an innings and 92 runs.
BJ Watling scored a fine century as New Zealand dominated the final session with steely resolve to reach 338 for six on the third day of the second Test against England on Sunday.