David Moyes has warned Ange Postecoglou he is "amongst the sharks" in the Premier League as he hailed the former Celtic boss as "very good".
The West Ham manager saluted Postecoglou's work at Celtic as he offered his verdict on the Australian taking over in North London.
And Moyes reckons Spurs have landed a top operator in Postecoglou - even if he faces a huge challenge at his new club.
Moyes' relationship with Postecoglou spans back to his time as Manchester United manager when he faced the Spurs boss in the dugout for the first time.
The West Ham boss recalled: "Ange is very good. I was fortunate when I was manager of Manchester United, I played against Ange out here in Melbourne. That was the first time we met. We also played Celtic two years ago up at Celtic Park, and I met him there again.
“I’ll always remember he gave me a really nice bottle of Australian red wine, that’s what I remember when we came out here. I gave him one back when we met again in Glasgow.
“I’m looking forward to seeing him. I have to say, he sent me a great message after we won the (UEFA Europa Conference League) final.
“He (did) a remarkable job with Celtic this year, winning the treble. It really was. And I think Tottenham will get a really good manager.
“He’s proved himself in a few countries – but obviously now, he’s in amongst the sharks. It will not be easy.”
Postecoglou however bristled at the perceived "step up" to the Premier League as he defended his time in the SPFL during his first press conference.
Earlier this week, he commented: "I don't know about step-ups. I had the same question when I got to the SPFL but I coached at a World Cup so I've coached in different leagues.
"I think every challenge is the same to be honest, it's relative to the competition you are in.
"I have never gone into any job thinking, 'This is going to be easy' in comparison to anything else I've done.
"It's going to be a massive challenge, absolutely, but Celtic was a massive challenge.
"I know people sort of say in Scotland if you're Celtic you are either going to finish first or second but second is last, second I'm not in a job.
"You have to finish first. Irrespective of what outside thoughts are there is still a demand there.
"And it's not just about winning, it's the manner in which you win as well."
