I think the rotoworld report sums it up:
" Dolphins acquired WR Kenny Stills from the Saints in exchange for LB Dannell Ellerbe and a 2015 third-round pick.
We're not sure what the Saints are thinking here. Stills is a soon-to-be 23-year-old playmaker with two years left on his contract at minimum salary. It's a great get for the Dolphins, who were going to cut Ellerbe and his inflated salary anyway. Stills isn't just a deep threat, either; he was fourth in the league among receivers with his 78.8 percent catch rate last season. Acquiring Stills may mean the end is near for Mike Wallace in Miami."
" Dolphins acquired WR Kenny Stills from the Saints in exchange for LB Dannell Ellerbe and a 2015 third-round pick.
We're not sure what the Saints are thinking here. Stills is a soon-to-be 23-year-old playmaker with two years left on his contract at minimum salary. It's a great get for the Dolphins, who were going to cut Ellerbe and his inflated salary anyway. Stills isn't just a deep threat, either; he was fourth in the league among receivers with his 78.8 percent catch rate last season. Acquiring Stills may mean the end is near for Mike Wallace in Miami."