What are the Wycombe Wanderers when 1 January 2010 is 23 July 2009 and df is gk?
CREATE TABLE "transfers" (
  "1_january_2010" text,
  "df" text,
  "adam_hinshelwood" text,
  "aldershot_town" text,
  "wycombe_wanderers" text,
  "undisclosed" text
);
SELECT "wycombe_wanderers" FROM "transfers" WHERE "1_january_2010"='23 July 2009' AND "df"='GK';