The Bills met with guard Quinton Spain on Friday, according to Field Yates of ESPN.com (on Twitter). The club also worked out cornerback Neiko Thorpe, Mike Rodak of ESPN.com (on Twitter) adds. 
The Bills have added a host of offensive linemen this offseason, including Ty Nsekhe, Mitch Morse, Jon Feliciano, Spencer Long, and LaAdrian Waddle. Spain, who started 15 games for the Titans in 2018, could be the newest addition.
Thorpe, meanwhile, spent the last three seasons with the Seahawks and saw almost all of his time on special teams. Before that, the 29-year-old spent one season with the Chiefs and two with the Raiders.