Ruben Amorim lets slip 'tough' admission Man Utd supporters won't want to hear

has admitted - while acknowledging that it's tough for fans to hear - that and are the world's best team and coach. The Sporting boss is preparing for his Jose Alvalade Stadium farewell on Tuesday night when City visit in the .

Following his final outing in Lisbon and Sunday's Primeira Liga trip to former club Braga, Amorim will get to work at United on November 11.

He is the sixth permanent manager since 2013 retirement tasked with closing the gap on United's bitter rivals.

And the 39-year-old has stressed the magnitude of the challenge in hailing Tuesday's opponents and soon-to-be bitter foes.

"For me, it's another game as Sporting coach. I will be judged as a Sporting coach," Amorim told TNT Sports.

"It's a massive game for me. [Pep Guardiola] is the best coach in the world. I know it's tough for Manchester United fans, [but] I think [City] are the best team in the world.

"So it's going to be a tough game. We are near the qualification for the play-off, so this game is very important.

"It's my last game in Alvalade, so that is my focus. The objectives of Sporting, my last game in Alvalade.

"I know everybody in England are looking and taking ideas for this game. For me it's just that, as Sporting coach, my last game here so that is my focus."

It has been a whirlwind week since United sacked Erik ten Hag last Monday. Amorim was confirmed as the Dutchman's successor on Friday.

The Portuguese coach has described the past week as the "worst and best" of his life as he toiled over leaving Sporting after four transformative years.

Amorim added: "[It's been] very tough. The worst and best week of my life. I don't have another way to explain [it].

"Very tough because I'm leaving a very good place, but I'm going to one of the best clubs in the world. So it's been very tough, but it is what it is.

"I'm emotional, but not in this part. I know because I was a player, and I know that in our lives, we have to leave, go, and change our environment quite often.

"But I'm very emotional in my relationship with the players and staff. So, I have a connection with them. That part will be tough, but the other part - the last game, everybody's looking at me.

"In the end, that part is not special to me. For me, it's the relationship with the players, and in that part, I'm very emotional. The part of leaving and going to another place is the life of a player and a coach."