Citicorp offered Maryland a deal for a bank bill.

The nation’s largest bank holding company told Maryland legislators that it would build a 1,000-employee credit-card processing center in the state in exchange for legislation allowing it to operate full-service banks there. The bill, which has the support of top state officials, is strongly opposed by Maryland bankers, who don’t want the competition from the New York giant. “They (Citicorp) have $150 billion in assets and the 90 banks in Maryland have $20 billion combined assets,” said William Weaver, president of the Maryland Bankers Assn.