The 49ers have yet to make an offer to free-agent wide receiver Anquan Boldin, and the veteran was not on the radar during the early portion of free agency.
At 35 years old, his future remains unclear.
However, the Buffalo Bills addressed the possibility of adding Boldin this past week.
When asked, general manager Doug Whaley said "it would be tough, for what we have (to sign Boldin)." But added, "never say never."
Boldin, who turns 36 in October, spent the last three seasons in San Francisco, finishing with 1,000-yard campaigns in two of them.