I assumed Foster is gone when the Steelers did not reach a new deal with him last summer with his contract expiring this past season. Finney is a restricted free agent but the presumed replacement for Foster. Steelers should be able to keep him.
With so much time missed the past 2 seasons Gilbert already has been gone to some extent but not certain the Steelers trust Feiler as the full time starter and Chuks may not be ready. No Munchak is not going to help in figuring out who plays RT.