it's not inconsistent, lefevre told the belgian press a few months ago that he had found extra money to sign contador if he left astana, that money was coming from his sponsors and mostly from specialized (quicksteps then bikesponsor).
After it became clear that contador was staying with astana specialized ended it's contract with quickstep and joined astana (well actually contador, they just took the rest of the team with him), a move that cost quickstep a lot of money and meant that lefevre is feeling a little credit crunch for the coming season (not the only team though teams like saxo are having the same problem)
It's in this context that lefevre has said that stauff will be quicksteps last signing and that he wants davis to buy out his contract if he wants to leave since he only now told lefevre that he's leaving..