McCullum vows to 'develop' Brook into England's next Test captain

England white-ball head coach Brendon McCullum has backed the ECB's decision to reappoint Joe Root as Test captain following Ben Stokes' retirement, while insisting that Harry Brook remains the long-term leadership prospect.Brook, who served as Stokes' deputy during England's recent Test series against New Zealand, was widely viewed as a leading candidate for the captaincy. However, when Stokes missed the second Test after being suspended for breaching the team's curfew, the ECB entrusted the captaincy to former skipper Joe Root instead of Brook. Following Stokes' retirement, the board opted to hand Root a second stint as Test captain.McCullum backs Brook as future Test captainDespite Brook missing out on the role, McCullum believes the 27-year-old's time will come."Everyone knows the affection that I have for Harry, he's a wonderful player and he's doing a fine job as white-ball leader.