In this scene of *Star Wars: The Force Awakens*

 >! [![Teedo on a Luggabeast with Rey and BB-8][1]][1]

we can see that

 >! Rey is freeing BB-8 which was captured by a Teedo. That Teedo was a scavenger and he captured a droid which could make him wealthy.

Why would he let Rey free BB-8? What did Rey say to him?


  [1]: https://i.sstatic.net/WGJtv.jpg