England are hopeful that Jason Roy will recover from a hamstring injury and feature in the all-important clash against India on Sunday.
Roy had to sit out in the last three matches after suffering a hamstring tear against West Indies and his experience at the top of order has been missed badly by England.
"Jason Roy is making good progress from his hamstring injury. He is being assessed every day. Yesterday he batted in the nets and was also running shuttles on the outfield," the England and Wales Cricket Board said in a statement.
"A decision on whether he'll be fit to resume against India will be made when we train on Friday and Saturday at Edgbaston."
Roy has crossed 50 in five of his past six ODI innings and smashed the second-highest score of the World Cup till date with his 153 against Bangladesh.
His replacement, James Vince, has so far struggled with scores of 26, 14 and 0 in his three innings.
England also have fitness concerns over their strike bowlers in Jofra Archer and Adil Rashid.
Fast bowler Archer is suffering from tightness to his left side, while leg-spinner Rashid has long shoulder problem which will be assessed in coming days.