I dont like to stereotype an entire nationality with the 'Brazilians never sseem to do well here' thing.... theres not been enough here to conclude that, and there have been enough successes to disprove that already eg. Denilson, Gomes, Edu, Alex, Juninho, even Mirandinha (tho he played for a lesser club)...
theres plenty of Brazilians plying their trade well in colder climates than ours eg. in Russia, Germany...
but in Fabiano's case, he has stated a dislike for N.European climates and his ordinary spel at Rennes when he was in his physical prime suggests this to be true.... with the more severe winters now experienced here do you really want a now older, less motivated Fabiano playing for Spurs on a cold Monday night at Wigan, or even Blackpool ??
not for 20m transfer fee (with no resale value) and another 15m on top in wages....