"We're not interested in trading Anquan," general manager Rod Graves said, according to The Arizona Republic. "That's the short of it."
ESPN's Chris Mortensen reported that the Cardinals have declined a trade offer from the Washington Redskins for the five-year veteran. The Redskins also unsuccessfully sought to trade for disgruntled Cincinnati Bengals wide receiver Chad Johnson.
Boldin is reportedly unhappy with his contract after the Cardinals re-signed fellow Arizona wideout Larry Fitzgerald to a four-year, $40 million deal.
The Cards say that they won't redo Boldin's deal so he's asked out, Mortensen reported.
Boldin's agent, Drew Rosenhaus, recently asked the team if it would be willing to trade his client, Cardinals officials said, according to the Republic. The Cardinals said no and don't plan to allow Rosenhaus to seek a trade.
"Anquan is a quality person and a great player," Graves said, according to the report. "We're hoping we can agree on a longer-term deal."
The newspaper reported that neither Rosenhaus nor Boldin could be reached for comment.
The roots of the trade talk extend to last summer, when Boldin and Rosenhaus met with Graves and coach Ken Whisenhunt to discuss a new deal. Rosenhaus, according to the Cardinals, made a proposal, and the Cardinals made a counterproposal in late November or early December, according to the report.
Graves said that offer would have put Boldin among the five highest-paid receivers within three years, the Republic reported.
"Drew did not respond to that proposal," Graves said, according to the report. "The proposal sat with him over a month. I called to ask him if he was going to respond, and he said he was going to wait until Larry Fitzgerald [contract] was done."
Boldin has three years left on his current contract with the team.
ESPN reporter Chris Mortensen contributed to this report.