Not much to say beyond Foles being reunited with Frank Reich. He would be a useful QB2 in Superflex/Two-QB leagues should Matt Ryan go down. Foles' arrival also zaps any value Sam Ehlinger had in Dynasty formats.
Kroft will compete for snaps alongside/behind George Kittle, which means a reduced role for the veteran. Kittle's injury history does put Kroft in play as a waiver wire pick-up during the season, and Kroft has had the most success amongst the remaining tight ends with the 49ers.