Chelsea Struggle Under New Management in 4-1 Defeat to Celtic

Enzo Maresca's team faces challenges adapting to new tactics during pre-season tour in the US.

Chelsea remains winless in their US pre-season tour, drawing with Wrexham and losing to Celtic.
Celtic capitalized on defensive errors, scoring four goals with ease.
Enzo Maresca emphasizes the team's need to improve both on and off the ball.
Maresca remains optimistic about Chelsea's readiness for the Premier League opener against Manchester City.
Chelsea's next pre-season match is against Club America in Atlanta.