How do I get Dr. Fred to sign it?

Hint 1 of 5:

The first thing that you should know is that Dr. Fred can't sign the contract
when he's under arrest by the IRS.  If you don't know how to free Dr. Fred,
look for other hints in this time.

Hint 2 of 5:

And of course, Dr. Fred won't sign anything while he's still asleep.  See
the question "How do I wake up Dr. Fred?" if you need help here.

Hint 3 of 5:

Dr. Fred is afraid of signing that contract.

Hint 4 of 5:

But there are other things that he will sign.

Hint 5 of 5:

Talk to him.