12:35pm: It doesn't look like the Orioles will offer Jackson a four-year contract, but three years plus an option is possible according to Eduardo A. Encina of The Baltimore Sun (on Twitter). It's all expected to come down to money.
9:33am: Free agent right-hander Edwin Jackson has multiple three-year offers, reports Ken Rosenthal of FOX Sports (Twitter links). Rosenthal says he could also take a one-year pillow contract and re-enter the market next offseason, when he'll still be just 29 years old.
We know the Red Sox have made Jackson an offer, and it's believed that he'll take a one-year deal to pitch in Boston. The Orioles also have interest and the Cardinals checked in on him recently. They're reportedly closing in on a deal for Roy Oswalt, however.