According to Pro Football Talk, the Raiders this week have worked out Clemson OLB/DE Vic Beasley. This according to Ian Rapoport.
The 6'3", 246-pound edge rusher was a consensus All-American in each of the last two seasons and was named the ACC Defensive Player of the Year last season. He holds Clemson's all-time sack title with 33. He was the leader of Clemson's defense, which statistically was the best in the country.
While fourth overall seems high for someone like Beasley who would likely be best suited for OLB in a 4-3 at least from Oakland's perspective, if they have plans to use Khalil Mack in a defensive end role then Beasley would be an ideal guy to line up behind Mack. If Oakland were to trade down a few spots, Beasley might be an attractive option there.
A note of interest is that Oakland sent, amongst others, linebackers coach Sal Sunseri to Beasley's workout. Sunseri, having been on Florida State's staff of late, played against Beasley on several occasions and is very familiar with him and knows what he can do. If anyone can give an educated opinion of Beasley and how he might fit on the Raiders defense, it would be Sunseri.