Currently the outside linebackers coach of the Titans, he can interview with other teams as they look for a new job. According to Paul Kuharsky, Crow will meet with the Browns to discuss their job as the defensive line coach.
The one issue, however? The Browns do not currently have an opening at defensive line coach as Ben Bloom holds the post. Bloom was a holdover from the previous regime though, so Schwartz might be looking to bring his own guy in to coach the engine of his defense: the defensive line.
Similarly to the offensive side of the ball, the Browns are looking to improve. For the offense, that was overhauling the staff on that side of the ball. For Schwartz, this is looking to upgrade an already strong unit by getting a new voice in the room.