Who to drop for Humber? WHIR always!

[BiGAnT]

I want to pick up Humber since he's going against OAK and also because he looks like he is pitching very well right now...who should I drop...my top three thoughts right now are Lyon (who looks HORRIBLE yet again - I just read they were probably giving him back the closer's role!! But it looks like maybe not now haha), then Crow since he lost the closer's role (though he is still solid) and then maybe Vlad (but he is VLAD and I'm hoping he can turn it on eventually). Any thoughts?? And it doesn't have to be any of those three, it could be someone else, thanks!!

C Yadier Molina
1B Ryan howard
2B Brandon Phillips
3B Jhonny Peralta
SS Jimmy Rollins
OF Matt Kemp
OF Carlos Quentin
OF Rajai Davis
Util Corey Hart
BN Vladimir Guerrero
BN Alex Rios

SP Roy Halladay
SP Chris Carpenter
SP Jair Jurrjens
RP Sergio Santos
RP Mark Melancon
P Gio Gonzales
P Brian Matusz
P Charlie Morton
P Mike Adams
P Aaron Crow
P Brandon Lyon
DL Brandon McCarthy

[Bullatopia]

drop Aaron Crow.