Tyler Eifert had surgery two months ago to repair a partial ligament tear that he suffered during the Pro Bowl. He was in a cast for six weeks and has to wear a protective boot for at least another week.
The injury actually happened in the Pro Bowl and the story said it will be the last time Eifert plays in the game if he's ever back. With the opener six weeks away, it's possible Eifert misses time in the regular season. The later you can get Eifert in your draft, the great value it would be. Obviously you will need to carry a second TE until Eifert can prove he's back to form, and roster spots can be valuable.