4. Deepak Chahar
The case of fourth pacer is a weak link in the squad selection of the Men in Blue. If a pacer gets injured or gets out of form, the captain or management has no one else to lean to.
Moreover as the tournament will be held in England, conditions might tempt management to go with four or even five frontline pacers. Thus this list has three fast bowlers as backup options.
Deepak Chahar can be one of those valuable options. There can be situations when the captain would like to bowl full twenty overs with someone and save someone like Jasprit Bumrah at the end. In that situation Chahar can be an excellent replacement choice.