Creating a best-ever XI for any team is tough. Trying to decide between better players and favourite players, moving from idols to those that you saw more times in person. Comparing eras and generations, different teams, do more trophies make a better player? Should it be all about numbers?
It's the ultimate pub conversation and it is designed for great debate, arguments and ultimately nostalgia. Fans will have their own picks and Chelsea supporters have been blessed with some great players to decide from.
Leaving it down to a group of new signings complicates matters though, and when Chelsea's new crop of players - Marc Cucurella, Raheem Sterling and Kalidou Koulibaly along with returning loanee Conor Gallagher - were sat down to decide their team, it was just as hectic.
