This week will see Jofra Archer in a first Test appearance in more than four years after being named in England’s 15-man squad.
He is the only addition to an otherwise unchanged squad after England’s win last week, which Agnew said was “a fantastic victory”.
“I think they’ve played some very exciting cricket over the last three years since Ben Stokes and Brendon McCullum got together,” he said, “but it’s always been slightly on a knife-edge.
“There have been some victories along the way. There have also been some terrible defeats where England has fallen in a bit of a heap, but this was a very measured, calm, rather a new approach, to be honest, and it was very, very encouraging to see.”
The following Tests will take place at Lord’s, from 10 to 14 July, Old Trafford, from 23 to 27 July, and the Oval, from 31 July to 4 August.