As with Cesc Fabregas, some players who go and play for foreign clubs improve on a cultural level. It makes them grow on many levels; intellectually, because you have to learn a new language and adapt to another culture, and on a footballing level too.
“If out of all mankind one finds a single friend, he has found something more precious than any treasure, since there is nothing in the world so valuable that it can be compared to a real friend.”