The 68-year-old, who has made a shock return to football after nearly two years out of the game to replace Javi Gracia at Elland Road, has been tasked with keeping Leeds in the Premier League with just four games remaining.

Allardyce takes over a Leeds side who sit 17th and are only above the relegation zone on goal difference after a five-game winless run.

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The former England manager's first game in charge is on Saturday at title-chasing Manchester City, live on Sky Sports, where he will come up against four-time Premier League winner Pep Guardiola.

But Allardyce believes he is on a par with Guardiola as well as Klopp, who has won the Premier League and Champions League at Liverpool, and Arsenal manager Arteta, who has guided the Gunners to the top of the league.

In his first press conference as Leeds boss, Allardyce said: "I might be 68 and look old and antiquated but there's nobody ahead of me in football terms. Not Pep, not Klopp, not Arteta. It's all there with me. They do what they do and I do what I do.

"In terms of knowledge, I am not saying I'm better than them but I'm certainly as good as they are."

Allardyce also revealed a few people have told him he "must be mad" to take on the job of saving the relegation-threatened club.

He said of his appointment: "It was a shock because this time of the season and there are many managers who had changed hands, the most in the history of the Premier League, I thought it was all over for this season.

"It was only a couple of minutes before I said yes. Because of the situation, I had to rush through the process quickly so I could be here for at least a reasonable lead into Manchester City.

"I've had a lot of response from many people saying congratulations. A few said I must be mad but I enjoy the game so much.

"To try and save this club and keep it in the Premier League is a big responsibility but one I want to take because of who Leeds are."

Allardyce: Biggest challenge of my career

Allardyce must find a way to keep Leeds up with only four matches remaining.

"It's probably only the biggest challenge (of my career) because of the shortness of games that are left," he said.

Allardyce is reported to have agreed a basic salary of £500,000 for his four games in charge, with a £2.5m bonus if he can keep Leeds up.

When asked if there was a chance he would stay at Elland Road beyond the remainder of this season, he said: "Never say never.

"It depends what happens at the end of the four matches and what the conversation is all about, how I feel and more importantly how my wife feels."

Former MK Dons, Charlton and Oxford United boss Karl Robinson will be Allardyce's assistant and ex-Leeds striker Robbie Keane has also joined the backroom staff.

Allardyce had hoped to have been assisted by Sammy Lee, who is unavailable after being refused permission to cancel jury duty.

"The judge has left Sammy unemployed and wouldn't let them off," Allardyce added. "I think it's very poor judgement indeed. It's a real shame because he loves being with me and I love having him with me."

After Allardyce's first game at the Etihad Stadium on Saturday, Leeds face Champions League hopefuls Newcastle at Elland Road the following week.

The final two games of the season are a trip to West Ham, one of Allardyce's former clubs, and the visit of Tottenham, who are bidding to qualify for Europe.

Leeds have lost five of their last seven games, with Sunday's 4-1 reverse at Bournemouth following 4-1, 5-1 and 6-1 defeats to Arsenal, Crystal Palace and Liverpool respectively last month.

Watch Allardyce's first game in charge of Leeds as they go to title-chasing Manchester City on Saturday, live on Sky Sports Premier League and Sky Sports Main Event from 2pm; kick-off 3pm.