Is McCullum's 'relaxed' look a bluff?To play this video you need to enable JavaScript in your browser.This video can not be playedIs McCullum's 'relaxed' look a bluff?Close00England's Jos Buttler speaks on the "relaxed" demeanor of his head coach.SubsectionEnglandPublished10 FebruaryShareclose panelShare pageCopy linkAbout sharingRead description