The Los Angeles Dodgers are the favorite to retain Zack Greinke this winter, but another team could emerge as an option.

Greinke may only opt out of his contract at the end of the season to negotiate a higher guarantee with management, which currently owes him $71 million over the next three years.

The right-hander turns 32 in October and perhaps the analytical Dodgers would be reluctant to splurge on him.

The San Francisco Giants will have $50 million in payroll coming off the books and if Greinke does leave the Dodgers he is expected to desire a competitive team.

"Greinke recently told USA Today that he admired the Giants players and couldn’t decide whether to root for San Francisco or his original team, Kansas City, in last year’s World Series," writes Ken Rosenthal.