Simple question, who's is the best available wide receiver not currently under contract to a NFL franchise?

Consider, you can sign him after Week 1 is concluded and not have to guarantee his contract for the season if things geaux south.

Does he offer the right blend of gameday playmaking, team chemistry, and healthy practice? Then, why not sign him?

How did WWL flub this up. There is no way, there must be some truth to it. I just don't understand.