“He’s learning, he looks hungry. He’s not happy just to be at Dortmund and score goals, he’s trying to improve his game and he’s going to get better and better.”
Agbonlahor thinks Haaland would make the difference for any of the four teams in contention for the title who could realistically afford him.
He added: “You look at the Premier League teams that could do with him now; Manchester City, Manchester United, Chelsea, Liverpool, they could all do with him.
“What would he do for any of those clubs now? If they had him in January, whoever signed him would win the league.”
United currently have Anthony Martial, Edinson Cavani, Marcus Rashford and Mason Greenwood as their main striker options.