Amorim, who has agreed a contract until June 2027, is the sixth permanent manager United have appointed since Sir Alex Ferguson’s illustrious 26-year reign ended with his retirement in 2013.
He has established a reputation as one of Europe’s most promising managers, leading Sporting to two league titles – including the club’s first in 19 years – but said he only wanted Manchester United as his next move.
“I’ve had other opportunities – the president and [director of football] Hugo Viana can confirm this. It’s not the first or the second time that I have been requested by another team and I don’t want another team,” said Amorim.
“After Sporting I wanted that one, Manchester, and I want that context because that context allows me to do things my way and the club believes me that way.
“There’s a time when I have to take a step forward in my career. That’s what happened. It was harder for me than to any Sporting fan, believe me, but I had to do this.”
He added: “Now I go home happier because I have explained. People say ‘it’s about the money’, but there was another team that wanted to hire me before and they paid three times more than Manchester.
“It was the best phase of my life. Everyone at Sporting knows. I understand the disappointment of the fans but today is not the farewell. We still have two important games against Manchester City [in the Champions League] and Braga [in the league] to maintain the lead.”
United, 20-time English champions, are 14th after nine Premier League games this season, with Ruud van Nistelrooy set to oversee the next three fixtures – two in the Premier League and one in the Europa League – as interim boss prior to Amorim’s arrival.
Van Nistelrooy’s future at the club remains unclear and Amorim stated his desire to take his current staff with him to Old Trafford, having worked with the same coaches since starting his first job at Portuguese club Casa Pia in 2018.
“I will take my staff with me. That was always one of my conditions. I brought them with me since Casa Pia,” Amorim said.
He also insisted he would not return to buy Sporting players in the January transfer window, after watching in-form Sweden forward Viktor Gyokeres score four goals on Friday.
“Gyokeres costs 100 million and it’s very difficult. I’m not going to pick up any Sporting player in January,” said Amorim.