There's a need at cornerback and a big hole to fill at left guard after Buffalo lost Andy Levitre to free agency.

WSJ: Bills select QB Manuel with 16th pick in draft

Once free agency began Tuesday, the Titans agreed to terms with Buffalo guard Andy Levitre and San Francisco tight end Delanie Walker, a person familiar with the situation said.

WSJ: AP Source: TN agrees on deals with Levitre, Walker

Aside from Byrd, the Bills are also attempting to re-sign left guard Andy Levitre, who is eligible to become a free agent after completing his four-year contract last season.

WSJ: Bills place franchise tag on S Jairus Byrd