"If you look at Shami and Yadav, they are your number one Test bowlers. And Bhuveshwar (Kumar) and (Jasprit) Bumrah have been exceptional and posses all the skills to do well in ODI competitions," Arun gave a peek into the mind of the team management.
"With the volume of cricket India is going to play, it is very important that we have pool of bowlers to choose from so that they remain fresh for every form of the game that we play," explained Arun at pre-match media conference.
"We encourage them (the bowlers) to play first class cricket. Mohammed Shami and Umesh Yadav have been playing first-class cricket and Shami has done pretty well for Bengal (10 wickets from 2 games)," Arun said.
Workload management has been a priority, the former India medium pacer said.
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"Too much or too little of bowling is not good for the bowlers. So we need to ensure where they bowl enough and play enough number of matches so that they stay fit and sharp when we require them," the bowling coach opined.
"Well with these two boys (Chahal and Yadav) have done exceptionally well for us and we would like to take a good look at them before we could come up on a combination for the World Cup. So, so far they have shaped exceptionally well," he said.
After performing extremely well against Australia, the two struggled against the Kiwis batsmen Tom Latham and Ross Taylor in Mumbai as they conceded 125 runs and managed a single wicket.
"If you look at the overall percentages, we are happy with the way they have shaped up, so one-odd match shouldn't trouble us," he added.
Tom Latham in particular disturbed the length of spinners by using the sweep and the reverse sweep shots and Arun said the team had their plans in place.
India stare at a rare series defeat at home after clinching the past six bilateral series and Arun conceded that it would be a challenging task.
"Again, we look at it as a big challenge right now. New Zealand compete exceptionally well, they had a fantastic partnership and they went on to win that (Mumbai) game. It is a bigger challenge for us to come back.
"We know we have our plans in place and it is good testing ground for the team (on) how you come back from behind and do well in the series," he added.
"It's just not the decision of the bowling coach, it is a combined decision of the physio, trainer and the bowling coach, we decide to rest someone at practice and then we do that."
India skipper Virat Kohli and the fast bowlers did not come for practice since it was an optional session at the MCA Stadium here.