It'll heat up around the combine. They have other options wiht Burleson/Delmas (11 million or 8.5 million of room depending what they do) and some restructures for Houston, Tulloch and Calvin (7.6 million). Maybe a Rob Sims extension (1 million in room). They should get Suh done by draft pick signing time though (5-8 million). It would be nice to get him done late Feb or early March before free agency to avoid all the restructures.
If they get Suh and Sims done now, figure out safety (Delmas or someone else Behthea/Chris Clemons) and give Fairley the 2015 team option. They'll be in great shape in 2015.
http://www.spotrac.com/free-agents/nfl/2015/detroit-lions/
Basically just Joique Bell to sign long term and that won't be a back breaker.