England will leave it late before confirming captain Alastair Cook's return from a groin injury in the third Royal London one-day international against Sri Lanka.

Cook, however, appeared to be in no discomfort at Emirates Old Trafford on the eve of the match, initially in a light team training session and then when he batted for an hour in the nets.

He sat out the second match of the series at Chester-le-Street on Sunday when, in his absence under stand-in captain Eoin Morgan, England produced a miserable performance as they were bowled out for 99 on the way to a 157-run defeat.

The uncapped Alex Hales was called in as cover for Cook, but in the event Michael Carberry replaced him at the top of the order.

Hales will remain in Manchester until England announce whether to stick with the same squad for the final two matches in the five-match series currently level at 1-1.