Agreed Chechu will retire from Discovery. He is towards the end of his career and probably has only two years left (this year included). He acknowledged as much in a Daily Peloton interview earlier this year, in terms of not having much time left in his career. He has more freedom this year (including in the Tour) because DC won't have incentives to control the peloton and will try to move responsibility to CSC and TM (at least early on).
Chechu has a high level of loyalty and is happy on DC. Also, Chechu is good friends with Noval, whom he used to train with even before Noval joined the team.
If he went somewhere else, he would also not be team leader. He would still be valued as a mountain domestique, because that is what he is.
Azevedo may have to take a pay cut, but he probably will accept that, so he too will probably retire from Discovery. He may even retire this year, unless he does better on an individual basis. He is sitll valued, because if he were not as much, he would have been deployed, together with Beltran, to the Giro as a mountain domestique.