The Packers have 12 receivers at their organized team activities this week.
Starters Donald Driver and Greg Jennings appear to be safe, along with second-year pro James Jones and their top draft pick Jordy Nelson.
That means eight other players will compete for two or three spots all the way through training camp.
The Packers have five receivers back from a year ago, including Ruvell Martin, who caught 15 of his 16 catches for first downs last season.
He said he's not surprised the team drafted Nelson and fellow receiver Brett Swain, as they were apparently the best players available at the time.
Meanwhile, Jennings said he was shocked to hear that veteran wide-out Koren Robinson was cut a week and a half ago.
Jennings said he thought Robinson was making progress into the off-season and he was looking forward to his return.
Meanwhile, defensive tackle Justin Harrell will miss the team's off-season practices with a back injury.
Defensive tackle Johnny Jolly and corner Will Blackmon are also out, but the Packers say all three should be ready for training camp in late July.
The NFL might play without a salary cap in 2010, but Green Bay Packers' President Mark Murphy hopes it doesn't come down to that.
Tuesday, the 32 league owners voted unanimously to opt-out of their collective bargaining agreement with the players' union after the 2010 season.
There would be no changes this year and next, but unless the two sides reach a new deal by next spring, 2010 would proceed without a salary cap and limited free agency.
The cap has been considered crucial for keeping small-market teams like the Packers in business and it seems strange Green Bay voted to put it in jeopardy.
However, Murphy says the Packers have always been supportive of league priorities and he says the current contract is not working well for the teams as a whole.
Commissioner Roger Goodell said the players are getting too much of the revenues right now, about 60-percent.
He said rookies get too much up-front, and teams cannot recoup signing bonuses from players who breach their contracts.
Union chief Gene Upshaw says the league's move comes as no surprise and it starts the clock ticking on the negotiations.