You have to think ahead, who are your keepers?
As I see it they are:
AP, Murray and AJ Green/Turner vs. AP, AJ, Turner
AJ is a proven stud, he is injured, but with the development of the texans, I think AJ is a TOP 3 WR, where as Murray has still a lot to prove a a stud (4 games dont make you a proven stud), rembember J Harrison?, Slaton?, P Hillis?.... you need two consistent years to prove your a stud, so go with Andre Johnson!!