The Titans have agreed to terms on a six-year, $46.8 million deal with their top free agent target, Bills guard Andy Levitre.

As the NFL's free agency period began at 3 p.m., the Titans were also lining up a visit with Lions defensive tackle Sammie Hill, and have expressed interest in 49ers tight end Delanie Walker and Rams wide receiver Danny Amendola.

The Titans made upgrading the interior of their offensive line a priority and Levitre, 27, should be a good start.