Dallas Cowboys second-year linebacker DeVonte Holloman has been advised by doctors to give up football due to a severe neck injury, coach Jason Garrett revealed Thursday.

Holloman, 23, missed six games last year with a neck injury and injured his neck in Saturday's preseason game against Baltimore.

Holloman had three different medical opinions, including one in San Antonio this week.

"DeVonte got information back from the doctors he visited with regarding his neck and it doesn't look like he's going to be able to play football anymore," Garrett told reporters. "It's in relation to the injury he had last year and he had a similar injury this year. I'll let him speak more to that. But the information we have doesn't look he's going to be able to play football anymore."

Garrett said he spoke to Holloman, who was on the field in practice Thursday, although he was not dressed in uniform like his teammates.

"It's a very challenging, difficult thing for a young man who has dreams of being an NFL football player (and) achieves those dreams," Garrett said. "I told him this morning, 'you're a 10-year player in my mind. You'll be for a long, long time.' He just has everything you want. He has physical ability, he's tough and has good feel for the game.

"But this becomes an easy decision for him and his family when you're dealing with that kind of an injury. He had a good visit with him this morning. He had a smile on his face. He's certainly welcome to be part of our football team."

Holloman appeared in nine games (two starts) for the Cowboys in 2013, recording 26 tackles and two sacks.