Boldin, who's in a long contract dispute with the Cardinals, informed the NFL Players Association in a letter that he intended to replace Rosenhaus as his agent. The players association said it received the letter Friday, so with the required five-day waiting period, Boldin can sign with a new agent Thursday.
Rosenhaus issued a statement saying he has "great respect" for Boldin.
"I'm hopeful we can work things out and he will return to the Rosenhaus Sports family in the near future," Rosenhaus said.
Boldin, who has two years left on his contract with the Cardinals, is upset with the team's management over what he says was a failed promise for a new deal last offseason. He has asked for a trade. The Cardinals said they would listen to offers, but on draft day, they claimed no team had proposed a deal that could be seriously considered.
Quarterback Kurt Warner has been outspoken in his desire to get Boldin back with the Cardinals.
"Maybe Anquan felt that there was a sticking point there and that this is going to free some things up and allow them to have a different approach coming forward and work better with the Cardinals," Warner said after the workout Tuesday. "I really don't know. I don't want to speculate on the reasons behind it all, but I think I've had hope from Day 1 that they can get something done."
Boldin has been represented by Rosenhaus since being selected by the Cardinals out of Florida State in the second round of the 2003 draft. Boldin signed a four-year, $22.75 million extension with Arizona in August of 2006, and that deal keeps him under contract through the 2010 campaign. Boldin has a base salary of about $2.75 million next season and $3 million in 2010.
"Hopefully, the ball will get bouncing, and hopefully, he'll be back out here on the field and be comfortable that his situation will get handled," Dansby said.
The Cardinals had no comment on the situation.
Cardinals general manager Rod Graves has said the team wants to re-sign Boldin but has two other players -- Dansby and safety Adrian Wilson -- it wants to deal with first. Dansby has been given the franchise tag for the second year in a row, and Wilson has one year remaining on his contract.
Boldin, who says Fitzgerald deserved every penny, said he is underpaid in the current market. At the start of training camp last season, Boldin said he would never re-sign with the Cardinals, but with the team holding him under contract for two years, his options are limited.
Copyright 2009 by The Associated Press