Ellison suffered a torn patellar tendon in Week 17, leaving him uncertain for the start of the 2017 season. He's been useful to the Vikings as a blocker, but with just 42 receptions in 58 career appearances, Ellison has never emerged as a key part of the passing game.
Exum (ribs) has been placed on injured reserve, Chris Tomasson of the St. Paul Pioneer Press reports.
The Vikings have dealt with a ridiculous string of injuries at the safety position over the past few weeks, allowing Exum to make a couple of starts. The team is now left with Harrison Smith (knee/hamstring), Robert Blanton (knee), Andrew Sendejo (knee) and newly-signed Anthony Harris.
Joseph (foot) will have toe surgery during the offseason, Chris Tomasson of the St. Paul Pioneer Press reports
This shouldn't come as any surprise, given that Joseph dealt with a foot injury throughout the entire second half of the season. He missed Weeks 12-16, but with 56 tackles in just 12 games, Joseph cemented his reputation as one of the league's better run-stopping interior linemen. He only has 12.5 sacks in 81 career games.
Ball (knee) is "doing everything" and expected to be "ready to roll" for the offseason program by Raiders' GM Reggie McKenzie.
Ball emerged in Week 5 of last season by holding Denver TE Owen Daniels without a catch on five targets. The performance earned him his first career start versus San Diego in Week 6, but shortly into the game he suffered a knee sprain and was ruled out by halftime. Ball will serve as depth for an imposing Raiders' outside linebacking corps in 2016 behind Khalil Mack, Bruce Irvin, Malcolm Smith and perhaps Aldon Smith (suspension), should he return in November.
Helu recently underwent surgery for a hip impingement and is expected to have the same procedure on his other hip soon, ESPN's Adam Caplin reports.
Helu struggled in his first season as a Raider, playing merely nine games and totaling just 39 rushing yards, 75 receiving yards and one touchdown on 26 offensive touches. In wake of those troubles, Helu's offseason hip procedures figure to help him regain some flexibility going forward, as he hopes to improve next season.
Reece has been suspended four games for violating the NFL's policy on performance enhancing drugs, CSN Bay Area reports.
Reece, who will sit out Sunday's season finale against the Chiefs, is thus eligible to return to action after the Raiders' third game of the 2016 season. In the meantime, he can participate in all of the team's offseason and preseason practices and games.
The Raiders and Smith (suspension) agreed to a two-year contract Monday, the team's official site reports.
In the midst of a one-year suspension for another violation of the NFL's policy for substances of abuse, Smith will remain where he spent the first nine games of the 2015 season, when he contributed 3.5 sacks among 28 tackles to the Raiders' pass rush. It remains to be seen whether he'll be strictly contained to a one-year ban, as the commissioner's office has been known to do their due diligence once a suspended player applies for reinstatement. Depending on further adjustments made to the defense in the offseason, free-agent addition Bruce Irvin appears set to man strongside linebacker in the meantime.