The Yankees and free-agent shortstop Derek Jeter are expected to agree on a new contract by the end of the weekend, according to two sources with knowledge of the situation. New York is expected to give Jeter a three-year deal that will pay the future Hall of Famer roughly $17 million annually. There will be an optional fourth year at a lower salary, according to the sources. If the final deal is comprised of those terms it would represent a $2 million decrease in his average salary over his recently-expired 10-year, $189 million deal.