Jaylen Warren is currently out for the Pittsburgh Steelers' Week 4 game against the Minnesota Vikings due to a knee injury. He was ruled inactive for this game after being listed as questionable and having limited practice participation throughout the week. The Steelers have not provided a detailed timeline for his return, and the exact duration of his absence remains uncertain as it depends on his recovery progress. Kenneth Gainwell is expected to take over as the primary running back in Warren's absence.