Jos Buttler argues that the recent decision to relieve Brendon McCullum of his Test‑coaching responsibilities could actually improve England's prospects at the upcoming Cricket World Cup, because the former New Zealand captain can now devote his full attention to the white‑ball game. McCullum was stripped of his red‑ball duties in July, with former New Zealand great Stephen Fleming eventually appointed as his successor. However, McCullum retained control of England's limited‑overs programme, which finished the summer on an impressive run of eleven victories and just two defeats. During that spell England secured ODI series wins against both India and Sri Lanka, achievements that have helped restore confidence in a side that has struggled to replicate the dominance they displayed after winning the 2019 World Cup.

The victories have also lifted England’s standing in a format where they have experienced a relative decline over the past few years. On the "For the Love of Cricket" podcast, Buttler – who captained England during the ill‑fated defence of their 2023 title – explained that the split‑coach model now gives McCullum the freedom to concentrate entirely on the upcoming tournament in southern Africa.

"He only has one focus now and that is the white ball," Buttler said. "It’s not that he couldn’t manage both, because he certainly could, but his time was divided and he had to think about the Test side as well." According to Buttler, the change means McCullus can now zero in on the nuances of limited‑overs cricket, particularly the One‑Day International format that will culminate in the World Cup next winter.

"Now he can focus solely on white‑ball cricket – T20, yes, but mainly ODI cricket with that World Cup on the horizon. It seems like Baz is naturally all in on, ‘how do I win this World Cup with this team?’" Buttler observed.

He added that the proximity of the tournament makes it a tangible target for McCullum. "I think he can sort of see that the World Cup is not that far away. It’s a real target, now his remit has changed from four months ago being in charge of everything to, ‘right, I can really nail down on this.’ He’s just got more time and more focus on that." Buttler also highlighted that England’s ODI performances have been inconsistent for a couple of seasons, and that the recent successes represent a promising foundation for further growth.

"ODI cricket for England has not been consistently great for a couple of years, so there’s some nice growth to go on that and this summer’s been a really good start," he said. The conversation also touched on Buttler’s own injury woes.

The England wicket‑keeper‑batsman is currently sidelined with a hamstring problem and has already been ruled out of the upcoming tri‑series in Pakistan. Moreover, his fitness remains uncertain for the November tour of Australia, meaning England could be without their most experienced one‑day player for up to eight ODIs and a substantial portion of the pre‑World Cup preparation period. When asked about his recovery timeline, Buttler explained, "I’ve had a scan and I’m waiting to see the specialist.

Then we’ll know what the next steps are. The unknown is often the tough part. Any cricketer just wants a physio or a doctor to tell you, ‘on this date you’ll be back playing cricket.’ Unfortunately, they can’t do that just yet." In summary, Buttler believes that McCullum’s singular dedication to the white‑ball game could be a catalyst for England’s World Cup campaign.

By shedding the dual responsibilities of managing both Test and limited‑overs squads, McCullum can now channel his strategic thinking, coaching expertise, and motivational skills exclusively into preparing the team for the biggest stage in ODI cricket. This focused approach, combined with the momentum generated by recent series victories, offers England a clearer pathway to challenge for the trophy in the 2027 tournament.

The broader implication of this coaching restructure is that England may have found a model that maximises the strengths of its staff: a specialist Test coach in Fleming who can concentrate on the longer format, while McCullum, a proven limited‑overs strategist, can hone the nuances of batting aggression, bowling variations, and field placements that are essential for success in the 50‑over game. If both coaches can operate without overlap, the national side could benefit from more coherent game plans, clearer communication, and a unified vision tailored to each format’s unique demands. Looking ahead, the England board will need to monitor both McCullum’s progress in fine‑tuning the squad and Buttler’s rehabilitation.

Should the wicket‑keeper‑batsman return to full fitness in time, his experience and leadership could further enhance the team’s chances. Until then, the emphasis remains on building a resilient, adaptable ODI unit capable of navigating the varied conditions they will encounter in South Africa and Zimbabwe during the World Cup.

Overall, Buttler’s assessment underscores a strategic shift: by allowing McCullum to go "all in" on the white‑ball agenda, England has positioned itself to capitalize on recent form and to enter the World Cup with a clear, focused game plan aimed at lifting the coveted trophy once again.