On paper the needs of this team for 2016 are....
1. QB - McCown is the definition of a placeholder/stopgap and Manziel might be a total bust.
2. WR - Bowe and Hartline might both be washed up. Hawkins is solid #3. Gabriel's size might keep him from being a legit starter on the outside. Benjamin is on the bubble and not that good anyway. Mayle may have been overdrafted. Something to consider, although you can't rely on him whatsoever, is that Josh Gordon *in theory* will be back for the entirety of 2016.
3. TE - Unless Rob Housler has a huge amount of untapped potential we don't know about, a F/Joker tight end is a need. In-line/Y TE is probably set with Barnidge/Dray and the new kid Telfer.
4. ILB - Karlos Dansby is fantastic, but he turns 34 during the season. It would be surprising if he maintains last season's level of effectiveness throughout the entirety of his contract.
RB, OL, DL, OLB, CB, S (unless Gipson walks after next season) appear to be relatively set on paper.