Man City manager has watched the defending champions concede five goals in four games.
Manchester City boss Pep Guardiola says they have to stop giving opposing teams a head-start in games.
The defending champions have gone 2-0 behind in four of their last six Premier League matches in a run that stretches back to last season.
City host Nottingham Forest tonight - and Guardiola insists they need to tighten up at the back.
Elsewhere, Steven Gerrard's Aston Villa go to leaders Arsenal, while Liverpool entertain Newcastle.
Wolves are away to Bournemouth and Tottenham meet West Ham in a London derby.
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