Without Kevin De Bruyne Pep Guardiola had to adjust his strategy. Last season Pep Guardiola often used a 3-4-3 formation, while this season he has used a 4-2-3-1 formation. This change in strategy allowed Alvarez to get a place in the main line-up where he was played as an attacking midfielder as well as a second striker. The adoption of this formation has certainly covered the gap in the absence of De Bruyne and Bernardo Silva, but so far Pep Guardiola's tactics have really proven to be good.
Today Manchester City played very well in the first half, but they tended to decline in the second half because Rodri was sent off due to a red card. Manchester City, which only had 10 players left on the pitch, tended to have to defend against Nottingham attacks, but in the end Pep Guardiola's team still maintained its winning streak.
Julian Alvarez put as second striker line or attacking midfielder for replacing Kevin de Bryune position, its working well because Manchester City unbeaten until six matches and winning over Nottingham Forest make City the only one Premier League teams without loss any points yet. Actually Manchester City helped with early goal scoring against Nottingham Forest, after success lead 2-0 on first half have problem when Rodri sent of after receiving red card on second half make City have play more defensive than offensive after playing with ten players.
Not problem for Pep Guardiola have to play with ten player on second half and success defend winning score from Nottingham Forest for managing top standings awhile.