The following is the fifth of eight position previews in advance of training camp.
With Martellus Bennett traded to the New England Patriots in March, Zach Miller will open training camp next week as the Bears' undisputed No. 1 tight end.
Miller proved he's capable of filling that role last season when he emerged as a surprise contributor, catching 34 passes for 439 yards and a team-leading five touchdowns.
The breakout year came after Miller had sat out the previous three full seasons.