~snip~
Losing De Bruyne indeed have an impact for Manchester City performance in Premier league and it proven Haaland performance looks decline when Manchester City playing without De Bruyne but in this competition i am sure Manchester City will be qualified with champion group status
Yes, to be able to win the title you need talented player and Haaland cannot face thats alone without player who strengthen the defense line, and so far Kevin De Bruyne has done his best for Manchester City if Pep Guardiola doesn't immediately make a mature strategy It is not impossible thats Manchester City will have difficulty facing the Premier League and also the Champions League.
therefore Pep Guardiola only hope at the moments is for Haaland to be able to scored goals for Manchester City, but this all requires strongs team collaboration to be able to achieve victory in every matches.