I think we should franchise Anthony Spencer again this year and not sign him long term. So, we need a replacement.
Since we're going to keep Spencer this year, we'll need to look for a player with 1st round talent that is either very raw or has an injury that we can draft in the 2nd-3rd round and groom for a year.
Carradine was widely talked about as a 1st round pick after his impressive 2012 season, but suffered a torn ACL in late November which will keep him from working out for teams (a Bruce Carter sort of situation). Kiper had him 19 on his big board before the injury.
The question is whether he can play a stand up outside linebacker.
Some quotes from various sites:
"Should be able to play either end position and possibly grow into a 3-4 OLB role. A bit too tight in his lower half to be a natural in pass coverage."
"Lines up at both RDE and LDE but plays strictly with his hand in the dirt. Did not observe him dropping into coverage through three games of film study. Appears to be at his best when playing forward and able to 'hunt'. Appears to have enough athleticism to stand up as an OLB for a base 3-4 front but will need time adjusting dropping into coverage and feeling out throwing lanes."