Chelsea are doing good business as they're buying young players and building them up then selling them while they still have a decent team that's giving them results. Chelsea has being winning trophies too although they aren't big trophies but they're still silverware and that's good business for them because they're making money and still winning. Chelsea still has a lot of players to sell off and I think they should make their transactions faster and not slow before they're left having too many players on their payroll when they aren't featuring on the pitch. It's also good business that the players are being sold to teams outside the premier league.
Chelsea have started well building good business after spending much money to sign youth players and giving them duration contract until five to six years later but success sell some of them with expensive price. Currently Chelsea have many players and several of them loan to other club and get opportunity if his player have consistent performance possibility selling with higher price. Signing many players than other club give much benefit for Chelsea exactly when success winning FIFA Club World Cup.
Still have bad side of Chelsea transfer activities when signing any mediocre players with too expensive price, I don't think good business if Chelsea spent out for underrate players without have much experienced but buy them over 100 million euro. Chelsea's management must be smart when negotiating with any players want to sign and buy them based on their market values.