According to his agent Joe Linta, Matt Birk has decided not to retire. The veteran center will be returning for his 15th NFL season where he is currently an unrestricted free agent.Even with Birk’s decision to return, the Ravens could still draft a center or look to sign one in free agency.
Before we line up and play in 2012, there will be another center on this football team in some capacity – free agency, draft or whatever. - General Manager Ozzie Newsome
The team’s backup center last year was veteran Andre Gurode, who is also an unrestricted free agent. The Ravens will most likely re-sign one if not both of these veteran interior lineman.