The Red Devils are desperate to land the teenage Salzburg ace, who has stunned Europe with his goalscoring exploits this season.
Manager Ole Gunnar Solskjaer, who coached the player at former club Molde, has even sent his personal scout to watch the player.
And their interest in Haaland is now set to ramp up in the coming days with several reported updates on a possible deal.
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According to ESPN, Man United will now attempt to sign the 19-year-old superstar in January rather than waiting until the summer to do a deal.
The Premier League club fear his price tag could go through the roof if his scoring continues at the rate it is currently, with his form attracting interest from more European giants too.