In May of last year, the 49ers locked down inside linebacker Patrick Willis for the next five years, awarding him a contract worth $53.51 million contract, good for $29 million guaranteed. Willis' deal is the top of the line in regards to inside linebackers, and it makes sense, seeing as he's just short of being the consensus best in the league. He deserves every dollar of that guaranteed, and probably every dollar of what the whole thing is worth (as evidenced by the rather easy-to-attain incentives).
There will probably be another MIKE linebacker that gets that kind of money. But for now, we've got someone getting more guaranteed dollars, as the New York Jets have extended David Harris. Bob Glauber tweeted some details:
David Harris deal: 4 years, 36 million, 29.5 guaranteed. Biggest guaranteed for a ILB in NFL history. #jets
Now, Harris is not on Willis' level, and he'll probably never make the kind of coin that Willis is making, but that much in guaranteed dollars is borderline psychotic. Harris is getting half a million more dollars guaranteed than the best inside linebacker in the league. At the very least, the Jets are getting serious this offseason. When it all comes down to it, they did just lock down a very good player, but that's a lot of scrilla.