Rotoworld breaks down the Bucs offseason team needs

Tampa Bay BuccaneersNotable Free Agents: RB Doug Martin, DT Jacquies Smith (RFA), DT Henry Melton, CB Sterling Moore, OLB Danny Lansanah (RFA), SS Bradley McDougald (RFA), FS Keith Tandy, DT Tony McDaniel, FS Chris Conte, RB Bobby Rainey, CB Mike JenkinsDefensive Back: Tampa Bay's cornerback play in Lovie Smith's final year as coach got so bad the Bucs actually used journeyman Sterling Moore to shadow No. 1 receivers down the stretch. A 2011 undrafted free agent, Moore has spent time with four different teams in five seasons. Every single Bucs 2015 cornerback received a negative pass-coverage grade from Pro Football Focus. The safety play wasn't any better. Tampa Bay's secondary needs a facelift.Defensive End: The Bucs entered 2015 with the weakest defensive end group in the league. They emerged with the No. 26 pass defense, per Football Outsiders' DVOA. A lot of that is attributable the NFL's worst secondary, but it's also explainable by a lack of consistent up-front pressure. Jacquies Smith led Bucs ends in sacks (7) but was easily washed out against the run, and is now a restricted free agent. Under new DC Mike Smith, sub-rusher Howard Jones (5 sacks) and run-stopper LE William Gholston (3) are the only other potential keepers.Offensive Line: LT Donovan Smith had a brutal rookie season on Jameis Winston's blind side and would probably be better suited for right tackle or guard. Washed-up RT Gosder Cherilus was similarly ineffective across from him. LG Logan Mankins, who turns 34 in March, is owed $7 million in the last year of his deal. C Evan Dietrich-Smith got benched in favor of Joe Hawley, who was signed off the street in Week 2. Impressive small-school rookie Ali Marpet is the Bucs' only offensive lineman who should be assured of returning at his starting post.Wide Receiver: I also considered running back as a need, but perhaps not with Doug Martin's re-signing seemingly a foregone conclusion. Next up is wide receiver, where Vincent Jackson has become increasingly inefficient at age 33, and whose season was ended by a knee injury. Third receiver Louis Murphy tore his ACL in November. The Bucs need a complement to Mike Evans who could work into three-wide sets and replace Jackson by 2017. One intriguing in-house prospect is Kenny Bell, a 2015 fifth-round pick who graduated from Nebraska as the school's all-time leading receiver but missed his entire rookie year with a hamstring injury.