DeVonte Holloman's career may be over due to a neck injury.

The Dallas Cowboys were hoping Holloman would help replace Sean Lee at linebacker.

The second-year player left Saturday's contest against the Baltimore Ravens after injuring his neck late in the game. A sixth-round pick in 2013, Holloman missed seven games last season with a spinal contusion.

"I don't know anything medical about it," Jason Garrett said. "I don't know that much about it, specific things in regards to that. But it has to do with his neck and he had that injury last year, and dealt with it again this year. And it's a very challenging, difficult thing for a young man who has dreams of being an NFL football player, achieves those dreams. And I told him this morning, I said, 'You're a 10-year player in my mind, you were gonna play for a long, long time.'"