PORT ST. LUCIE, Fla. — Matt Harvey seemingly left the door open to the possibility of signing a contract extension with the Mets.

“I think whatever comes up is going to come up,” Harvey said Monday morning. “I think I’ve never shied away from it, I’ve never said I wouldn’t consider it.”

Harvey is a free agent after the 2018 season and is represented by agent Scott Boras, whose clients have typically tested the open market.

The righthander agreed to a $4.325-million deal for this season, avoiding arbitration. Harvey made $614,125 in 2015.

Harvey said he’s heard nothing about extension talks. However, spring training is typically the time that teams and players enter into such discussions.

Harvey, 26, went 13-8 with a 2.71 ERA last season, his first back from Tommy John surgery. Counting the playoffs, he logged 216 innings despite plenty of hand-wringing about his workload.

“It feels great,” said Harvey, who arrived at the team’s complex a few days before the start of workouts. “We did everything we possible could to manage going into the season. I felt great going into last year. But obviously this year, it’s nice knowing that [I had] a full season. Going into a fresh season, it’s nice, it feels great.”