Clay Buchholz enters 2016 without a guaranteed contract past this season.

The Boston Red Sox hold a club option for 2017 ($13.5 million) and Buchholz says he's not interested in working out an extension with the team this spring.

"I still think I have some stuff to prove before we even get into [extension discussions]," Buchholz said. "Being prepared and coming out and pitching to your capabilities, starting the days your name is on the lineup card and trying not to miss one of those starts -- that's big. I think if it all goes well through the first half of the season and I'm healthy going into the second half, then maybe [we can discuss an extension]. But I'm not going to press on that aspect of it. I'm going to try to cooperate with everybody and help this team win baseball games."

John Farrell has repeatedly said he wants Buchholz's priority to be on making 35 starts and pitching 200 innings.