Despite what most people will tell you, daylilies CAN come back from roots. I would plant them in a container and water frequently with a mix of seaweed solution and SuperThrive. (You could also do this with them planted in the ground, but having them in a container would keep the solution around the roots instead of seeping into the surrounding soil.)
That said, I would think that your clump would come back naturally; there must be crowns in there for there to be fans.
