Erling Haaland's agent Mino Raiola won't take him to Barca because they couldn't afford him and they are going backwards as a team , Real , City or Bayern are his only options. On the other hand, this agent is toying a lot of big clubs around. It’s time all big clubs to not buy players that choose him as agent. Then young upcoming players will reject him.
Haaland won't join Barcelona even if Barcelona are in good condition. Now they are in crisis and Haaland have more reasons to reject any offer from Barcelona. His style does not match with tactic in Barcelona and if he joins La Liga, he would choose Real Madrid or Atletico Madrid.
Perhaps Haaland will leave Bundesliga as well so his destination can be Premier League or La Liga. In my opinion, two best clubs for Haaland will be Real Madrid and Manchester City. Else, he can join PSG. They are top three clubs in my opinion for Haaland if he really leaves Dortmund.