https://twitter.com/caplannfl/statuses/218743474978177024
One player definitely entering the Supplemental Draft is TCU running back Ed Wesley:
http://www.nfl.com/news/story/09000d5d82a38b18/article/tcus-ed-wesley-enters-supplemental-draft
As noted previously, the Supplement Draft is scheduled for 7/12. I'm hearing there could be up to 10 players in this year's draft.
One player definitely entering the Supplemental Draft is TCU running back Ed Wesley:
http://www.nfl.com/news/story/09000d5d82a38b18/article/tcus-ed-wesley-enters-supplemental-draft