The Major League Baseball declared Hector Olivera a free agent on Friday, and the Cuban second baseman could sign with a team on Sunday.

Upon hitting the free-agency market, Olivera has received calls from several teams, including the New York Yankees, Los Angeles Dodgers, Atlanta Braves, Miami Marlins and the San Diego Padres.

According to Yahoo Sports, the San Francisco Giants, Seattle Mariners and the Oakland Athletics are also interested in acquiring the 29-year-old infielder.

Major league teams are already in full swing in terms of Spring Training, which is creating speculation that Olivera will make his decision as early as Sunday in order to prepare himself for the 2015 MLB season.

Olivera, who averaged .312 with seven home runs and just 25 strikeouts between 2013 and 2014 in Cuba, is reportedly looking for a deal that could go as high as $70 million.

The Cuban's camp is reportedly eyeing a deal near the seven-year, $72.5 million contract Rusney Castillo signed with the Boston Red Sox or the six-year, $68.5 million Yasmany Tomas inked with the Arizona Diamondbacks, SB Nation reported.

However, several teams have reportedly expressed concerns about Olivera's health. The veteran second baseman, who will turn 30 on April 5, saw limited action last season in Cuba after sustaining a blood clot in his left biceps.

Aside from concerns about his left arm, Yahoo Sports also reported on Thursday that teams fear that Olivera has a damaged ulnar collateral ligament in his right elbow.

Such injury could require Tommy John surgery, but Passan added that several teams have already conducted physicals and did not see any red flag in the free agent's throwing arm.

Baseball America also revealed that Olivera and his camp have already denied claims about the UCL damage and that the free agent has passed four physicals over the past several weeks.

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