Haaland’s double in RB Salzburg’s 3-2 loss to the Serie A side meant the Norwegian became the first player to score six times in his first three Champions League games.
Haaland already has 20 goals this season in just 13 games and is being chased by a host of Europe’s elite clubs.
United reportedly sent a scout to Salzburg’s game against Napoli, according to Italian journalist Nico Schira, reports the Daily Star.
Liverpool have also been linked with the player, and it’s no surprise they have shown interest after witnessing his skills first hand this season, but reports suggest Jurgen Klopp is unsure the 19-year-old fits his style of play at Anfield.
Haaland’s relationship with United boss Ole Gunnar Solskjaer could sway him towards a move to Old Trafford, despite the forward claiming the transfer speculation linking him with United was f******g boring.
Solskjaer worked with the youngster when he was manager at Molde and gave Haaland his professional debut.
Haaland has previously spoken about Solskjaer, saying: “He has had a huge impact on my life, both as a person and as a trainer.
“He won the Champions League and was an incredibly good player. He has taught me a lot.
“I have dreamed of playing for the best clubs in the world my whole life, and I especially like English football.”
However, the player’s father Alf-Inge Haaland had spells at United’s rivals Leeds and Manchester City and his son has also spoken of his desire to play for Leeds.
“I want to be the best possible,” he said.
“The dream is to win the Premier League with Leeds.
“In addition, the goal is to become a better player than my dad was.
“I hope to get more caps than he did.”