3. Lance Lynn
Lance Lynn has been injured for the past few weeks but may be near a return. Still, I don't think he has many days left in a Cardinals uniform.
However, Lynn is somebody who is a steady veteran presence in a rotation and does have postseason experience, having been a part of the 2011 World Series championship team. There are some teams that might want that presence in their rotation down the stretch.
I think the same situation applies to Gibson and Lynn. He won't be with the team much longer, and it's time to see if some young guys can make an impression before the season ends. This will determine whether or not the Cardinals feel like they have viable depth options for next year.
Lynn is 37 and his best days are behind him, so I don't think it makes a lot of sense to hold onto him if the Cardinals aren't going to be making the playoffs. But we'll see what happens. I think it would be wise to include him in a waiver dump.