According to Eric Hansen of the South Bend Tribune, they've signed one.
"As expected former Notre Dame wide receiver David Grimes parlays a tryout with KC Chiefs into a free agent contract," Hansen writes.
Grimes was one of my guesses to receive a free agent contract with the team. He knows the offense and during training camp can be a filler at a position that requires quite a bit of running.
It'll be up to him to make the roster during training camp. History says there's not a great chance of that happening.
Update: The Chiefs announced the move.