#3 Drop Alonso and play Azpilicueta as left back
Marcos Alonso is one of the best left-backs in the Premier League. His inclusion in recent squad lists for the Spanish national team has shown that he is recognized as such at the international level.
He has been a constant menace for Chelsea down the left flank in the past two seasons. However, the problem with the Spanish international lies in his lack of positional awareness and tendency to drift so far away from the back four. This weakness has been exploited by Manchester United and Tottenham to score vital goals against Chelsea this season.
Raheem Sterling is the City player most likely to feature in the right wing position against Chelsea. Sterling has caused better defensive full-backs all sorts of problems this season. His pace and trickery have seen him score twelve goals and assist a further nine in the EPL this season. Pep could also unleash any of Bernardo Silva, Mahrez or Sane in that position as well.
For Chelsea to contain the left side of their defense, Sarri should replace Alonso with Azpilicueta. Left back is not a new position to Azpilicueta who held down Chelsea's left back spot for years before the arrival of Marcos Alonso and is a better defender than Alonso. Zappacosta could be drafted in at right back to do a job for the Blues.