Foster agreed to a one-year contract with the Dolphins on Wednesday, Cameron Wolfe of ESPN.com reports.
Foster hasn't produced any meaningful statistics since recording a 27-541-3 line as an undrafted rookie with the Bills in 2018. The Dolphins already have DeVante Parker, Preston Williams (foot) and Jakeem Grant (ankle) locked into key roles for 2021, so Foster is unlikely to see much regular wok at receiver. Instead, the 26-year-old will likely make his biggest impact on the Dolphins' special-teams units.