Blackstock at WLB looks official for now.
The Cardinals want to add depth at the position. They are not expected to bring back free agent Orlando Huff, who started much of 2006, or veteran backup James Darling, who is also a free agent.
Darling said Tuesday he had heard from the Cards early in free agency, but the minimum contract offer came without a signing bonus, and Darling turned it down.
Darling, who will likely not sign anywhere until just before training camp, said he could land in New Orleans or Kansas City.
Meanwhile, Darryl Blackstock — the 2005 third-round draft choice who will head into minicamp this weekend as a starter — is unproven. Veteran Monty Beisel is a candidate to eventually unseat Blackstock, or the team could still use Calvin Pace as a starter along with Karlos Dansby and Gerald Hayes.
The team is expected to address the position in the draft later this month.