Terms of the contract were not disclosed by the Red Sox, but Darwin's agent, Randy Hendricks, said the agreement was worth a possible $12.2 million.
Darwin, who received a $1 million bonus for signing, will earn a total of $6 million in 1991 and 1992 and a combined $4.8 million for 1993 and 1994, bringing the package to $11.8 million, Hendricks said.
* ANGELS: California, which said last week that it was interested in new-look free agent Gary Gaetti, took the next step yesterday, making an initial contract proposal of four years at an estimated $10 million.
Jim Bronner, Gaetti's Chicago-based agent, said the offer showed serious intent on the part of the Angels and would lead to further conversation.
The Minnesota Twins' third baseman is one of 15 players who received free agency in the collusion settlement and has until Jan. 29 to sign with another team or return to the Twins with a new contract.
Bronner said several clubs, including the Twins, are pursuing Gaetti but declined to speculate as to when he would make a decision.