Curran was confident England can dismiss West Indies twice in the last six sessions.
No play was possible on the third day of the second Test due to bad weather, with West Indies 32/1 in response to England's 469/9 (declared) in the first innings.
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Curran, talking in wake of a delayed start on Saturday (July 18), had already feared for the worst but said his team will still push for a victory.
"If we do get washed out today it is quite obvious what we need to do to win the game," he had told Sky Sports.
"We need to bowl them out cheaply in the first innings and try and get them following on. There are no reasons why we cannot do that."
"Obviously, it’s going to be a big workload for the bowlers but we are nice and fresh and hopefully we can do something for the team," he added.
Curran, who had missed out on the first Test after going down with diarrhoea and wouldn't have played the ongoing one either if Jofra Archer hadn't breached the bio-secure protocol, picked up the only West Indian wicket that fell late on Day 2 of opener John Campbell (12).
The left-arm seamer and handy lower-order bat also informed that all bowlers have already been communicated that the side will follow a rotation policy this busy summer, featuring four more Tests, including three versus Pakistan, by the end of August.
In normal circumstances that might have been managed, but the team management has been mindful of the fact that players have only just returned to action after a lengthy break amid COVID-19 pandemic.
"That’s why coming into the summer it was clear there was going to be a rotation policy and that’s why we have a totally different attack for this game," said Curran, with England resting James Anderson, Mark Wood and playing Stuart Broad, Chris Woakes as his pace partners at Old Trafford.
(Inputs from Reuters)