BASEBALL American League * Chicago White Sox -- Declared Carlos Martinez (first baseman) free agent after he refused to accept an outright assignment to Vancouver of the Pacific Coast League.

* Kansas City Royals -- Agreed to terms with Kevin Appier (pitcher) and Mike Macfarlane (catcher) on one-year contracts.

Milwaukee Brewers -- Agreed to terms with Chris George (pitcher) on a one-year contract.

* Minnesota Twins -- Agreed to terms with Lenny Webster (catcher) to a one-year contract.

HOCKEY (NHL) * New York Islanders -- Sent Paul Guay (right wing) to Capital District of the AHL.

* New York Rangers -- Sent Brian McReynolds (center) to Binghamton of AHL.

* Philadelphia Flyers -- Reassigned Craig Fisher (center) to Hershey of the AHL.

* St. Louis Blues -- Announced the retirement of Paul MacLean (forward) to take a scouting job with the team.

* Washington Capitals -- Recalled Jim Hrivnak (goaltender) from Baltimore of the AHL.

COLLEGE

* New Orleans -- Signed Tim Floyd (basketball coach) to a six-year contract extension through the 2000-2001 season.