Aguero believes Haaland would take time to adapt to English football.
The Norwegian striker joined Cityzens this summer after bagging 62 goals in 67 Bundesliga games for Borussia Dortmund in the past two seasons.
He is undoubtedly a favourite to win the Golden Boot this year even though he struggled in the Community Shield clash against Liverpool.
He missed a sitter from only a couple of yards that night.
Club legend Sergio Aguero believes Haaland is too used to German football and will take time to adapt to the Premier League.
Aguero himself scored 23 league goals in his debut season for City back in 2011.
‘He was too used to Germany,’ Aguero said on his Twitch channel.
‘Haaland thought he was alone, then Van Dijk arrived and said “welcome to the Premier League”.’
The Cityzens also let go star player Raheem Sterling to Chelsea this summer for £50m.
Aguero who spent six seasons with Sterling questioned the club’s decision to sell the England international this summer.
‘I don’t understand the sale of Sterling,’ Aguero said. ‘There are times they [City] make strange decisions.’