Manchester City have reached a principle of agreement with RB Salzburg striker Erling Haaland, according to Spanish media outlet Don Balon via Calciomercato.com today.Haaland, son of former Leeds and Manchester City defender Alf-Inge Haaland, has scored 17 goals in 10 games so far this season for the Austrian club. Juventus are also reportedly interested in the teenager.Haaland scored a hat trick for Salzburg in his Champions League debut against KRC Genk, leading the club to a 6-2 win.Apollo Heyes