No one can say that Guardiola's decision was right. Julian Alvarez was a talented young player. His position in the XI's plans was mostly on the bench but he was unique as a backup player. Julian Alvarez could have done something great for Manchester City this season. As we can see from Alvarez's contribution to the team at Atletico Madrid. We can't blame Haaland for Manchester City's downfall in any way, because he is always identified by the opposing players and coaches and plans are made for him. Because the opposing team is too busy with Haaland, his teammates get some advantage to score goals.
In order to save Alvarez's career, Pep Guardiola's decision to Julian Alvarez was right.
Julian Alvez can be a good partner Haaland if Pep Guardiola wants to make a Manchester City front line like the one made in Barcelona.
Instead of dueting Alvarez with Haaland, Pep chose to entrust Doku. I am very sure if Pep created the Alvarez, Haaland and Foden trio will make Manchester City the most deadly team.