Originally posted by empty3
you have no proof that's a free player 
When I was creating my next-to-last batch of dots, I needed to use my free player slot to build a blocking WR. At the time I created him (on Day 41), I could've also created a free HB, because the demand happened to be low enough at that moment.
Just for kicks, I kept re-checking for the next few days, but free HBs were indeed unavailable every other time I checked, which just highlights how difficult it is to get a free HB. But difficult and impossible are not the same thing. If you time it right, there's usually a window on Day 41 where enough older HBs have been retired but very few Level 1 HBs have been created, which temporarily drives up the demand for HBs and makes free HBs possible.