Pep Guardiola has been impressed by the results of the three other Premier League teams in the Champions League this season.
But the Manchester City boss says there is a long way to go before their achievements can match up to the success that Spanish sides enjoyed in the previous decade.
City, United, and Liverpool have already qualified as group winners with a game to spare, while Chelsea have also booked their place in the last-16 and can confirm top spot over Juventus if they match the result of the Serie A side when they take on Zenit St Petersburg on Wednesday.
To have at least three and potentially four of the eight seeds for the last-16 continues the strong showing of English clubs in Europe; Chelsea and City contested the
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