Darren Lehmannu00a0 who coached Kings XI Punjab in the IPL and the now-defunct Deccan Chargers, is currently coaching Australia A in England. Pic/AFP

"It obviously isn't the type of change we want to make three weeks out from the Ashes commencing but we believe a change is needed.

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"Mickey Arthur is a good man, he's tried his utmost to do a good job and unfortunately, at the end of day he just hasn't quite done that.

"We decided things weren't improving -- we could let things be as they are."

Sutherland praised former Australia batsman Lehmann, who played 27 Tests, as the "obvious choice to replace Mickey".

"As a cricketer and a coach he has an outstanding record, he's very highly regarded in cricket and within the Australian team," said Sutherland of Lehmann, who was appointed on a two-year deal.

"His performances recently as coach of Queensland and the Brisbane Heat have seen him win titles in all three formats of the game.

"We've recognised that by giving him development opportunities as a coach, most recently as assistant coach to the Australia A team here in England."

Sutherland also confirmed that Australia captain Michael Clarke, currently sidelined with a back injury, would stand down as a selector.

South African Arthur, the first foreign-born coach of the Australian team when appointed in November 2011, appeared to have paid the price for a 4-0 Test series loss in India, a poor Champions Trophy campaign and a lack of discipline within the squad.

This culminated with an incident which saw David Warner punch England's Joe Root in a bar in Birmingham, central England, after Australia's Champions Trophy loss to their arch-rivals earlier this month.

Warner was fined Aus$11,500 ($11,000) and suspended until the start of the Ashes.

Several others players were with him in the bar in the early hours of the morning, raising concerns the Australian squad's conduct.

It followed vice-captain Shane Watson, James Pattinson, Mitchell Johnson and Usman Khawaja all being dropped during the India tour this year after failing to submit feedback requested by Arthur.

The former Australia coach, whose Test record since taking over in 2011 was 10 wins, six losses and three draws, maintained he didn't feel let down by his players.

Mickeyu00a0Arthur, who was appointed as coach in November 2011, had a contract till the end of the 2015 World Cup. Captain Michael Clarke (left) has stepped down from selection panel. Pic/AFP

"The reality is when you take a job on as head coach you are responsible for the outcomes," Arthur told reporters.

"I don't feel let down, At the end of the day you live and die by the sword. I gave it 100 percent. The disappointing thing is I think we were nearly there to cracking it.

"We handled the Warner incident by the book," he added. "Nobody likes losing their job. I've given this job 100 percent commitment and if it wasn't good enough, so be it."

Arthur said he would like to see some "real standards" all the way through from Under-19 level.

Clarke, flanked by Lehmann in the third of three back-to-back news conferences, said: "We have a less experienced team after losing Michael Hussey and Ricky Ponting (to retirement) but that's not an excuse.

"We know the behaviour required to be an Australia cricketer. We know what performances are expected of us and we need to improve in both areas.

"I'm certainly accountable both on-field and off-field as captain."

Clarke, explaining why he'd stood down as selector, said: "Being a selector is a full-time job and I'd much prefer to be concentrating on the boys."

He added he'd been stunned by Arthur's sacking.

"Like everybody (I was) shocked at the time and then it was about trying to keep my focus on having success on this Ashes tour," Clarke said.

"That's the most important thing, that we make sure we are performing a lot better than we have so far on this tour and a lot better than on our most recent tour to India."

The 43-year-old Lehmann has a reputation as an old-school coach, keen to encourage his players to socialise together.

"It's important to talk about the game whether it's with a beer or a Diet Coke," Lehmann said Monday.

England hold the Ashes and Lehmann, asked what his three priorities were, replied: "Probably win, win, win', for a start.

"It's going to be an exciting journey for all the players and support staff and we'll meet that head-on."