Manchester City boss Pep Guardiola is wary of facing Chelsea on Thursday night.
Guardiola's side have scored eight goals in two games since the Premier League.
But the Spaniard knows it won't be as easy against the Blues at Etihad Stadium.
"They have always been a real force," he said. "With Antonio Conte they won the league and that was four years ago.
"In recent years they haven't spent too much, but if they do it's because they can afford it.
"If the clubs can do it they will do it. If they have done it they feel they need it. But the power was already there.
"When Abramovich took over it was uncomfortable for the Premier League and then Manchester City came and that was uncomfortable for the Premier League."
