England boss McCullum calls on Pietersen to shake things up

England’s white-ball head coach Brendon McCullum said he wants newly-appointed mentor Kevin Pietersen to shake things up and has encouraged the former Ashes and ​Twenty20 World Cup-winning batter to speak up if he has ‌ideas on how to improve the side.

Pietersen was appointed last week and joined the coaching staff ahead of the series against Sri Lanka, with his involvement extending through ​a busy period culminating in next year’s one-day international World Cup.

“He’s ​obviously got an incredible pedigree as a player and a ⁠lot of guys grew up idolising Kev. He’s brought a ton ​of energy to the setup within the last 24 hours,” McCullum told reporters ​on Monday.

“I’ve mentioned to him that I don’t want him to be buried in one specific skillset. I want him to look across the environment and challenge me privately ​around ways we can improve or things we can do differently.”

New ​Zealander McCullum was sacked as England’s test coach in July, with his tenure marred by off-field ‌controversies ⁠involving high-profile players like Ben Stokes, Harry Brook and Gus Atkinson.

Fast bowler Brydon Carse was then dropped from the test squad during their recent 3-0 series win over Pakistan after an incident outside a nightclub.

McCullum confident he can work with new England Test coach

McCullum struck a firm tone ​on conduct, saying ​he would no ⁠longer select players who did not maintain professional standards.

“There is a lot of talent around - if you’re not ​prepared to do that, there are other guys who will ​be ⁠given those opportunities,” he added.

“As far as Carsey is concerned, it’s important for Carsey he gets his house in order. We know he’s an excellent cricketer ⁠who ​has done well when he’s played for England.”

England ​host Sri Lanka in a three-match T20 series beginning later on Tuesday, before taking them ​on in three ODIs.