Seattle Mariners reportedly working on extension for Felix Hernandez

The Seattle Mariners still have Felix Hernandez under contract for two more seasons, but that apparently hasn't stopped them from working on a contract extension. Seattle is currently working on signing Hernandez to an extension, according to a report from Jason Churchill of Prospect Insider.

Churchill cites a source who says the Mariners are "working pretty hard" on an extension for Hernandez. A deal could get done just before or soon after the World Series. In a related tweet, Churchill said the deal would "probably" add four more years to Hernandez current contract. If that were to happen, Hernandez would be signed in Seattle through the 2018 season.

Hernandez has long been the rumor of various trade rumors despite the fact he and Mariners general manager Jack Zduriencik have maintained a desire to keep Hernandez in Seattle. When asked about the latest extension rumors, Zduriencik declined to provide much insight.

"Felix has made it clear he'd like to stay here, and we've made it clear we'd like him to stay," Zduriencik said, according to MLB.com. "That's all I'm going to comment on that right now."

The 26-year-old Hernandez signed a five-year extension worth $78 million in 2010. Hernandez is fresh off his fourth straight season with at least 200 strikeouts. He won the Cy Young award in 2010 and threw his first career perfect game this past season.