New England Test head coach Brendon McCullum and captain Ben Stokes must challenge each other to transform the country's red-ball fortunes, says Nasser Hussain.

McCullum has been tasked with fixing the failings in the five-day game of England, who will be captained by Stokes after Joe Root resigned in April following a run of one win in 17 Tests.

Former opener and now England men's managing director Rob Key has entrusted McCullum with the Test side despite all the 40-year-old's coaching experience coming within white-ball franchise cricket.

McCullum has coached Indian Premier League side Kolkata Knight Riders and their Caribbean Premier League affiliate Trinbago Knight Riders, but has playing experience in Test cricket with New Zealand.

Indeed, McCullum captained New Zealand's red-ball side through a transformative period and played in 101 Tests for his country.

Former England captain Hussain believes he and Stokes can take England in a different direction.

"It's a bold, brave, exciting decision," Hussain told Sky Sports.

"It's a little bit left field, I think most people expected maybe a Brendon McCullum type to come into the white-ball team and work with his mate Eoin Morgan and possibly somebody with more experience in red-ball cricket like a Gary Kirsten come in for the Test match format.

"But Rob Key sees it differently, I think both Stokes and McCullum are cut from the same cloth and Key has that sort of idea that he wants a positive captain and positive coach taking the team in a new direction and McCullum definitely fits that bill.

"That captain-coach relationship - they do have to sing off the same hymn sheet, they have to both constantly be working together.

"They also have to challenge each other, I'll be perfectly honest.

"It's not a case of Stokes and McCullum always agreeing with each other. It's also how you describe positive cricket really, it's not reckless cricket.

"I nearly picked Rob Key up on this the other day, he talked about brand of cricket, he wants England to play a positive brand of cricket.

"I think England fans and myself want to see England play a winning brand of cricket, however that's done, go out and start winning Test matches. If it is positive and exciting, double bonus. But winning is the most important thing.

"It's hugely exciting, to have Stokes as your captain, McCullum as your coach, it will be a very exciting few months and years ahead."

McCullum and Stokes' first task sees the pair host the country of their birth, New Zealand, in a three-Test series that starts on June 2.

Brendon McCullum is the "perfect person" to turn around England's Test fortunes, according to Andrew Strauss, who was a part of the selection panel for the new men's head coach.

England have won just one of their last 17 Tests, leading to the resignation of captain Joe Root, with Ben Stokes stepping up as skipper in April.

Former opener Rob Key was also appointed as managing director of men's cricket and was tasked with reshaping the faltering structure to make England competitive once more in the five-day game.

As well as confirming Stokes as captain, a decision was made to hire separate coaches for the red ball and limited-overs sides, with McCullum announced as Test coach on Thursday.

The decision represents somewhat of a gamble as New Zealand legend McCullum has only ever coached T20 franchises in the form of Indian Premier League side Kolkata Knight Riders and their Caribbean Premier League affiliate Trinbago Knight Riders.

However, McCullum played 101 Tests for New Zealand and captained the side through a transformative period, and Strauss believes the 40-year-old is a great appointment by England.

"I'm delighted and I'm excited. He blew us away with his clarity of thinking and his simple approach," the England and Wales Cricket Board's strategic adviser Strauss told Sky Sports.

"He's a very positive guy with a very clear mindset and he will embed that in the Test team at a time when confidence is a bit low and people need a bit of clarity and direction.

"He's an impressive guy. He can't wait to start and, quite frankly, I can't wait for him to start.

"[As a player] he was incredibly ambitious, he used to run down the wicket against some of the quickest bowlers in the world.

"He always took the positive option, he wasn't scared of failing, he wasn't scared of making mistakes and I think that is what this Test team needs at the moment.

"They need someone to back them, to give them confidence and inspire them, and they need to break the shackles and realise how good they are. I think he's the perfect person to do that."

McCullum's first task will see England host his country of birth, New Zealand, in a three-Test series that starts at Lord's on June 2.

Former England captain Michael Atherton has praised the "bold and imaginative" appointment of Brendon McCullum by England.

McCullum was named England's new Test head coach on Thursday, replacing Chris Silverwood after his dismissal in the wake of the 4-0 Ashes defeat in Australia.

Rob Key decided to bring in separate Test and white-ball head coaches after he was appointed as managing director of England men's cricket last month and chose McCullum for the longer form of the game.

"I think it's a very bold and imaginative choice, and an inspiring choice from Rob Key," Atherton told Sky Sports.

"Giving Ben Stokes the captaincy was the obvious choice and so his first big decision was to give Brendon McCullum the Test job.

"A week or so ago I don't think that was on anybody's radars, so he's not made the obvious choice here, but I think it's a very bold choice."

McCullum captained New Zealand and has coached in limited overs cricket in the Caribbean and Indian Premier Leagues, but this is his first coaching job in Test cricket.

Atherton does not think that lack of experience is a problem, however.

"I don't think it's a concern. Some other people within the professional coaching environment may think so," the former Lancashire batsman said.

"His limited coaching experience has come in the IPL with the Kolkata Knight Riders and in the CPL with their sister team. But he did play 100 Tests, scored a Test match triple hundred and he was very significant in Test cricket in his own right.

"As captain, he really led New Zealand into a brave new era, from the moment he took over – in Cape Town 2013 – the very first innings New Zealand were bowled out for 45. It was a really low ebb and a very difficult transition from Ross Taylor.

"But after that, he led boldly and fearlessly, and transformed that New Zealand team to the point which he laid the foundations for Kane Williamson's team that became World Test champions and have been very significant players in ICC events. So as a captain and as a leader, he's got plenty of experience in Test cricket."

Atherton also believes the relationship between McCullum and new England skipper Ben Stokes should thrive given both have similar aggressive approaches to the game.

"He's a nice fit with Stokes, they both approach the game and play the game in a similar manner and they'll look to give very clear message, captain and coach, and show they're singing from the same hymn sheet to a team you now expect to be given a bit of freedom and licence to play," he said.

"Neither Stokes nor McCullum are shy characters when it comes to playing the game of cricket, they like to take the game on and play it aggressively.

"One assumes that McCullum as a coach is going to be very similar to McCullum as a player and captain."

Brendon McCullum's appointment as England's Test head coach is "good news" for James Anderson and Stuart Broad, according to former New Zealand bowler Simon Doull.

McCullum was confirmed on Thursday as the successor to Chris Silverwood, taking up his first coaching role at international level.

The former Black Caps captain will step down from his role as head coach of Indian Premier League franchise Kolkata Knight Riders at the end of the season, having also previously coached similarly named Caribbean Premier League team, Trinbago Knight Riders.

Speaking to Sky Sports News, Doull believes McCullum's loyalty will mean England's two leading Test wicket takers will have no concerns about being left out of the squad again, after both were overlooked for the recent Test series against West Indies.

When asked if it would be good news or bad news for Anderson and Broad shortly before the official confirmation, Doull replied: "Good news. Absolute good news.

"Not only is [McCullum] an astute cricketer and an astute cricket brain, he's also quite a loyal bloke and I think there is a little bit of cricket left in both those guys, and probably a little bit more in Stuart Broad than some might think, so I would imagine it'll be very good news for those gentlemen."

Doull also said he thinks McCullum will get on well with Stokes, who was appointed as Joe Root's replacement as England's Test captain last month.

"I think there's a huge amount of respect already," he said. "I'd like to think [Stokes] would be the sort of captain who would want to own that team, and I don't think Brendon will have a problem with that whatsoever.

"He will do everything he can to get the best out of what is, outside of Joe Root, England's best cricketer... He knows as well as a captain [with New Zealand], he kind of ran that team. [Former head coach] Mike Hesson facilitated, he coached from the periphery... but Brendon basically ran that team and I would imagine he'll look for Ben Stokes to do the same thing.

Doull – who made 32 Test appearances for the Black Caps, taking 98 wickets – was also keen to back McCullum, in particular suggesting that he will want England to play their own style, rather than trying to adopt another.

"[McCullum's] best qualities? Very simple as far as his philosophies are concerned," he added.

"He turned New Zealand around completely [as captain], just because he wanted a New Zealand way to play and maybe that's something he'll look to do with England as well. Play the England style of cricket rather than trying to play like someone else, or invent a style that's not really suitable for English players.

"He's a straight talker... there's no airs and graces about Brendon. He's a South Island boy brought up pretty hard, pretty tough, and he played his cricket exactly that way.

"He will have enormous respect from the players... and he's obviously already had good conversations with Ben Stokes and [England managing director] Rob Key.

"So communication, tough but honest, and he will find a philosophy, I think, that works. Those will be his key things." 

New Zealand legend Brendon McCullum has been appointed England's Test head coach.

The 40-year-old was confirmed on Thursday as Chris Silverwood's successor and will take up his first coaching role at international level.

Former Black Caps captain McCullum had been considered a strong candidate to coach England's white-ball teams, having been employed by Indian Premier League franchise Kolkata Knight Riders and Caribbean Premier League team Trinbago Knight Riders.

Rob Key decided to bring in separate Test and white-ball head coaches after he was appointed as managing director of England men's cricket last month.

Key led the interviews for both roles this week, and it is former wicketkeeper-batter McCullum who has been given the opportunity to turn England's fortunes around in the longest format under new skipper Ben Stokes.

McCullum said: "I'd like to say how pleased I am to be given this opportunity to positively contribute to England's Test cricket set-up and move the team forward into a more successful era.

"In taking this role on, I am acutely aware of the significant challenges the team faces at present, and I strongly believe in my ability to help the team emerge as a stronger force once we've confronted them head-on.

"I've enjoyed several robust conversations with Rob Key about the direction of travel for the team and have found his enthusiasm contagious. I'm no stranger to bringing about change within a team environment, and I can't wait to get started.

"Ben Stokes is the perfect character to inspire change around him, and I look forward to working closely with him to build a successful unit around us."

New Zealand legend Brendon McCullum has been appointed England's Test head coach.

The 40-year-old was confirmed on Thursday as Chris Silverwood's successor and will take up his first coaching role at international level.

Former Black Caps captain McCullum had been considered a strong candidate to coach England's white-ball teams, having been employed by Indian Premier League franchise Kolkata Knight Riders and Caribbean Premier League team Trinbago Knight Riders.

Rob Key decided to bring in separate Test and white-ball head coaches after he was appointed as managing director of England men's cricket last month.

Key led the interviews for both roles this week, and it is former wicketkeeper-batter McCullum who has been given the opportunity to turn England's fortunes around in the longest format under new skipper Ben Stokes.

McCullum said: "I'd like to say how pleased I am to be given this opportunity to positively contribute to England's Test cricket set-up and move the team forward into a more successful era.

"In taking this role on, I am acutely aware of the significant challenges the team faces at present, and I strongly believe in my ability to help the team emerge as a stronger force once we've confronted them head-on.

"I've enjoyed several robust conversations with Rob Key about the direction of travel for the team and have found his enthusiasm contagious. I'm no stranger to bringing about change within a team environment, and I can't wait to get started.

"Ben Stokes is the perfect character to inspire change around him, and I look forward to working closely with him to build a successful unit around us."

Kolkata Knight Riders head coach Brendon McCullum and assistant coach David Hussey have heaped praise on his star man Andre Russell.