this is all bad thinking.
if a player is truely dedicated to maximising his career the clubs location shold not matter. they should be resting between sessions not out on the two in london. you know this is the fact lads.
only a few things separate some players from the also rans and the top players... eg... ronadlo/messi/suarez and then you've lots of zlatans and rooneys who frankly are good time charlies.
this is why krome.... mr sanchez aint a top player,
What if the clubs are of equal level and style and offer the same challenges?
Like us and Arsenal for example. Both clubs offered a very similar package so career progression would apply equally to both clubs.