The Dodgers and infielder Hector Olivera have agreed to a six-year contract worth $62.5 million, including a $28 million signing bonus, according to multiple reports Tuesday.Olivera, who turns 30 on April 5, was perhaps the most highly sought-after free agent from Cuba remaining.The Yankees, Braves, Marlins, Giants and Padres were also reportedly interested in Olivera, who plays second base but can also play third base.