With the offseason officially underway, will examine what's next for all 32 teams. The series continues with the . What's changing? Former defensive coordinator Jack Del Rio has in place of fill-in Tony Sparano. Del Rio tapped Bill Musgrave to serve as offensive coordinator while former linebackers aide Ken Norton, Jr. will play call a defense anchored around , . Some were surprised to see general manager Reggie McKenzie retained after presiding over a team that has produced an 11-37 mark under his watch. While he unearthed a in , McKenzie has plenty of work to do to upgrade a roster weighed down by his own aging, hand-picked free agents. With roughly $51.9 million in cap room -- and the No. 4 overall pick in April's draft -- the are in good position to add talent under Del Rio. Biggest free agents RB : McFadden is five years removed from a 1,000-yard campaign and no longer the centerpiece of Oakland's offense. While he ran well at points last season, McFadden was e sentially replaced by down the stretch. The can rely on Murray and a younger pair of legs to carry the ground game instead of overpaying McFadden for 2015. WR : Speed alone made him a mysterious and tantalizing potential deep threat, but Moore Shaquille O'Neal Jersey failed to emerge in 2014. With just 115 yards off 12 grabs, the fifth-year wideout doesn't loom as a priority signing for a team that last season handed more snaps to , , and . DT : A run-stuffing role player who exits the field on pa sing downs, Sims turns 30 in November. He might be kept around on a one-year deal as a reliable option behind starting nose tackle . Other key free agents: C , WR , TE , DE , CB , CB . On the way out? : "I and turn this thing around," Jones-Drew said last month. We don't see that happening after -- turning 30 next month -- failed to top 30 yards in a game last season, finishing with just 96 yards off 43 attempts. Over the past three seasons, his yards per rush have tumbled from 4.8 to 3.4 to just 2.2 in 2014. The can save $2.5 million with his release. : I won't waste your time here. Cutting Schaub saves Oakland $5.5 million, a no-brainer with looking like a better (and younger) option behind Carr than anything we've seen from Schaub since 2012. : Shipped to injured reserve with a torn bicep after six starts, Woodley never lived up to the promise. The can save another $5.4 million by parting ways with the 30-year-old pa s rusher who hasn't topped five sacks since 2011. What they need McKenzie must use his ample cap room and draft picks to lace the attack with a play-making wide receiver. The also must find young pa s rushers to supplant the aging core of Woodley and after Oakland produced a franchise-low 22 sacks in 2014. A lack of talent plagues the cornerback spot, too, which isn't helped by the slow development of former first-round pick . Offseason crystal ball NFL Media's Lance Zierlein Oakland to pick Alabama wideout Amari Cooper with the fourth overall pick. That makes plenty of sense for an offense in need of help. Look for the to make an equal splash in free agency, with Del Rio filling gaps on his defense with familiar faces who know the scheme. Former tackle might be a target. If the dump , Schaub and Woodley, they'll have north of $60 million to play with in cap space. The inherent problem is that McKenzie saw all three of those players as worthy free-agent bait last offseason. fans can only hope the money is better spent this offseason. The latest Podcast and discu ses 's future. Find more content on . Markelle Fultz Jersey