The deal is "said to be worth close to $40 million" and reportedly includes team options for a seventh and eighth year.
Fernandez, 22, was an All-Star as a rookie in 2013 and won the Rookie of the Year Award while finishing third in Cy Young voting. He had a 2.19 ERA and 0.979 WHIP in 172.2 innings over 28 starts.
He started only eight games in 2014 before undergoing Tommy John surgery.
The Marlins recently signed outfielder Giancarlo Stanton to a 13-year, $325 million contract and are in the process of locking up other young players, Heyman reports. Miami has already extended long-term offers to outfielder Christian Yelich and shortstop Adeiny Hechavarria, and is prepared to offer outfielder Marcell Ozuna an extension as well, according to Heyman.
- Dan Gartland