Dallas Keuchel, who's set to become a free agent at the end of the 2018 season, said Wednesday he won't negotiate with the Astros during the regular season. That means the club would have to try to sign Keuchel this spring or risk watching him hit the open market. "If there is something, it's going to happen before the season," Keuchel said. "There's going to be no contractual negotiations during the regular season. I feel like that would be a negative light on some of the teammates while those guys are busting their butts. I don't want anything happening behind the scenes with me that would affect those guys. I want to play ball and see where that leads us." Keuchel, who went 14-5 with a 2.90 ERA last year, recently hired Scott Boras to represent him, leading many to speculate he would indeed hit the open market this winter at 30 years old. When asked if there had been any long-term contract negotiations, Keuchel said no. "Whether or not my time here ends after this year, I'd like to leave my mark here and hopefully it's a good one," he said. The 2015 American League Cy Young Award winner, Keuchel was 9-0 with a 1.67 ERA in the first half last year and made the All-Star team before missing eight weeks with a neck issue. He signed a $13.2 million deal in January to avoid arbitration. The lefty was drafted by the Astros out of the University of Arkansas in 2009 and reached the big leagues in '12, before breaking out in '14.