George Kittle is an offensive weapon for the San Francisco 49ers, but he issued a warning to the rest of the NFL about their defense in 2025 with Robert Saleh back as defensive coordinator.

San Francisco 49ers star George Kittle sends a warning to the NFL over the return of Robert Saleh as defensive coordinator.

Robert Saleh is back with the San Francisco 49ers as defensive coordinator for the 2025 season following a four-year stint as head coach of the New York Jets. Somehow it's a relatively quiet offseason storyline for the 49ers, but don't let that fool you -- according to tight end George Kittle, the calm won't last long.