In touch there is no cursor. And it is impossible to follow anything that doesn't exist. You could compare touch (at least single touch) to a mouse only working when the left mousebutton is down.
Dropping an object in touch-mode usually means taking your finger of the screen, so all input is lost. You could try to use events to change between dragging objects, but that really depends on how your game is set up.
I told my dentist I had trouble with my teeth and asked her to fix it without looking in my mouth..