On his visit to South Africa, the former Chelsea marksman admitted that Pep Guardiola's side plays a high pressing game, but added that he was amazed by how Maurizio Sarri's men conceded a whopping six goals in one game.
"You can lose matches sometimes, but at this level, you have to be very careful," Eto'o told the South African media.
"Conceding six goals! It is true that City are playing at an unbelievably high level at the moment, and we were not expecting anything less from a coach like Pep Guardiola, but those goals came through due to individual errors and a lack of concentration. At some point, we all know how that can cost you," said Eto'o.
When asked if Chelsea can bounce back from the humiliating defeat, Eto'o said: "Sure, Chelsea can recover from the defeat. Football is an eternal recommencement. In football, if you can’t get up when you fall then you are not fit for it."
Chelsea conceded 10 goals in their last two away matches in the Premier League which has raised eyebrows on whether or not Sarri is still the right man for the managerial job.
The Blues lost 4-0 to Bournemouth last week before returning to winning ways in style with a 5-0 win over Huddersfield.
They face Malmo in the Uefa Europa League on Thursday before welcoming Manchester United in the fifth round of the FA Cup next week Monday.