Emerson has followed Capello to two new destinations after basically forcing a move out of Roma just to come to Juventus. Now after Capello has left a second club during the night, Emerson is the first person to say "fuck no" to playing Serie B football and was lining up his options with Capello even before the scandal hit. Now, if you don't understand why Emerson is nothing more than a Capello mercenary, then that is not really my problem... the player has no respect for the clubs for which he plays for and is only loyal to Capello and the big green stuffed in his pockets every place he goes.
Vieira is indeed less of a mercenary, however he too wanted out of Arsenal and demeaned his former club while playing half-heartedly for Juventus. And when the scandal hit the newspapers he was lining up his options, saying he too would not play in a second division. These players are mercenaries because of their actions, not because of they're skin color for the fucking last time.
And if you don't have a clue why Deschamps is not labled a mercenary, I think that speaks for your knowledge of the man and this club.