Fantasy Upside
Zach Miller averaged over five targets per game after the Bears' bye week, and really came on strong at the end of the season. The Bears felt comfortable enough in Miller's ability to send away incumbent starter Martellus Bennett in a trade.
Miller is projected to start this season, and if he extrapolates his production at the end of 2015 into a full season, then he will finish with TE1 numbers.
Fantasy Downside
Miller's sudden emergence in 2015 was a shock considering he hadn't recorded a reception for a team prior to 2011. Those missed years were due to several injuries, and his history with injuries should send caution. He's also a 31-year-old tight end (will turn 32 during the season) with limited playing experience.
Bottom Line
There are some risks involved with Miller, but it's hard to ignore just how good he was in the second half of last season. He built a rapport with Jay Cutler and could be an interesting selection later in drafts.