While there isn't a Calvin Johnson on the New England Patriots' roster, the depth at the position is going to create a lot of competition.
Aaron Dobson, Julian Edelman and Danny Amendola have all but locked up their spots on the roster, but the next three or four—if you include Matthew Slater as a receiver—are up for grabs. Josh Boyce, Kenbrell Thompkins, Brandon LaFell, Jeremy Gallon and Mark Harrison all will have their say in who gets to catch passes from Brady this season.
LaFell's versatility—he can play "X", "Y" or in the slot—will likely earn him a spot, and Boyce's speed can't be duplicated on the roster. That leaves one more position to fill.
The decision between Thompkins, Gallon and Harrison will likely come down to the offensive scheme that Josh McDaniels wants to run, the health of the player and their progression with the playbook.
If I had to guess, I think that Gallon's return ability and football smarts will earn him the sixth spot.