The problem in todays game is everyone wants instant success, whether it be trophies or performances. If it doesn't happen with either people are up in arms.
With football transfers it is very rare new players come in and start pulling up trees, and even if they do there are dips in performance where people pose a question that if said player is good enough.
It's also always never spork about much but adapting to a new country, lifestyle, environment and things like kids and schools etc.
It goes deeper than just the pitch, it really does.