Chelsea defender Cesar Azpilicueta says formation flexibility will be a key aspect for the Blues this season.
New manager Antonio Conte has already tried a number of different formations in pre-season friendly games.
And the Spaniard confirmed that the players have to adapt to whatever formation the Italian decides to deploy.
"It's important to be flexible in terms of formation," he told the club's official website.
"Every time the manager tries the best solution so we, the players, have to be ready to adapt to play in every system. The target is always the same, to beat the opponent, and with the different formations we can play we always have the ability to do that.
"We will try to get as close as possible to perfection as we can, even if it's hard.
"We are ready for work for that, we have a good few more days of training before the season starts, the games are finished, and now it's time to focus on West Ham.
"We are excited."