But they kept going and they manage to score a great strike in the end, unfortunately for us.
City have been linked with Leicester City's Turkey worldwide Caglar Soyuncu as they look to resolve problems in a rearguard shorn of captain Vincent Kompany, following a second successive Premier League title success, and then Laporte in August.
"That is not good enough", he said.
"We always try to create more and concede less".
Summer signing Rodri and Ilkay Gundogan have been chosen over three-time Premier League victor Fernandinho in midfield by the former Barcelona and Bayern Munich boss.
Of the Brazil midfielder being offered a new deal, Guardiola said: "Txiki Begiristain [the sporting director] - you have to ask him". That is why he plays.
Pressed on why he continues to choose a midfielder in defence, Guardiola responded: "I prefer [Ilkay] Gundogan and Rodri in midfield".
City had 10 points drifting from Liverpool last season before they successfully chased them to win their third consecutive title and Laporte remains convinced that they can do this again, something that Guardiola agrees with.
"David has confirmed he's leaving", the City manager said.
Guardiola, whose side has mustered just one win in their past five games in all competitions, also called for his team to show belief and to be more clinical in front of goal. "We must improve", Guardiola said but denied they were missing Kompany, now at Anderlecht, who, as captain, was a strong influence on the pitch and in the dressing room. "That is the fact".
Manchester City will play Burnley at Turf Moor on Tuesday before facing their Manchester United rivals in Etihad on Saturday - live on Sky Sports Premier League.
"We have to think about what we have to do to win the games and play quite similar to recent games, like Newcastle and except 20-25 minutes against Chelsea".
Barnes feels part of their success, despite not being the most technical of players, lies in "defenders not being used to big lumps like us".