The England and Wales Cricket Board (ECB) on Thursday (May 12) confirmed Brendon McCullum's appointment as the head coach of its Test team. McCullum will take over the job starting the home series against New Zealand. The former NZ captain is presently in India for his IPL commitments.As per a report, McCullum has left his role at IPL franchise Kolkata Knight Riders (KKR) and will land in the UK after the end of his stint with the franchise. His stint with England will see him kick off his journey as a coach of a national team. McCullum has only worked with franchises since his retirement.McCullum will earn a staggering amount of salary during his 4-year stint with England. As per Telegraph.co.uk, the former NZ captain has signed a £2million (Rs 18.88 crore approx) deal with the board. McCullum will only work with the Test team and England will have a separate coach for the white-ball format.The former wicket-keeper batsman has his task cut out as England haven't enjoyed a great run in past one year. Their below-par run saw the board sacking former head coach Chris Silverwood. Joe Root also stepped down as England's Test captain last month. He has been replaced by Ben Stokes, who was born in New Zealand. Brendon McCullum's coaching careerBrendon McCullum started his coaching career with Trinbago Knight Riders (TKR) in the Caribbean Premier League (CPL) after his retirement in 2019. His first stint with KKR came in 2020. While TKR won the CPL 2020 title, KKR couldn't qualify for the 2nd round.After a below-par run in the first half of IPL 2021, the team bounced back strongly and made it to the final. In the ongoing season, KKR have managed 5 wins from 12 matches and have bleak chances of qualifying for the 2nd round. Should KKR qualify for playoffs, McCullum might have a delayed arrival in the UK.