Last week, Detroit Lions center Dominic Raiola agreed to restructure his contract, essentially ensuring that he will remain on the team for the time being. It wasn't clear at the time what kind of pay cut Raiola took, but it was believed to be a pretty significant one.
Mike O'Hara, who writes for the Lions' official site, mentioned in an article a couple days ago that Raiola is going to be playing for the veteran's minimum in 2013 (via MLive). This is unconfirmed, but if true, Raiola's base salary for 2013 is now $940,000, down from $4.05 million. That's a decrease of $3.11 million, bringing his cap number for 2013 down to $2.95 million from $6.06 million.
In addition, O'Hara mentions that Raiola's salary is not guaranteed. This means that if the Lions found a replacement at center and released Raiola, they could save an additional $940,000 in cap space.
What will be interesting to find out is how much of a pay cut Lions wide receiver Nate Burleson took. I'd be surprised if he went down to the veteran's minimum like Raiola, but it would be a significant savings for the Lions if he did.