because he wanted to replace guys like Reith and Jimmy Haynes. Jones wants some saves, and with Graves and Reitsma in front he's not exactly blocked by Mariano Rivera and Billy Wagner
Exactly, so if O'Brien tells him it's only Graves and Riedling he has to beat out for saves instead of the trio of Graves/Riedling/Reitsma, then that's enough to make him give up a likely role in the Tampa mess for a comparable one in Cincinnati.
Given the way O'Brien works (slowly), it seems impossible that he wouldn't have told Jones about the impending trade to get him to come over to Sarasota. Otherwise, if you're Todd and you want the best job possible, why do you leave a situation where you're gonna get to work in the later innings and maybe even save situations for one where you work in the 6th and 7th innings of blowouts?