Michael Conforto #30 of the New York Mets runs the...

Michael Conforto #30 of the New York Mets runs the bases after his first-inning home run against the Milwaukee Brewers at Citi Field on Sunday, May 22, 2016. Credit: Jim McIsaac

With the Mets currently weighing outside options, Michael Conforto won’t be playing first base any time soon, even with Lucas Duda out indefinitely with a stress fracture in his back.

Less than week after he floated the possibility, Mets manager Terry Collins stomped it out on Friday, saying flatly that the sweet-swinging outfielder Conforto “is not a first baseman.”

Meanwhile, the Mets continue to explore trade possibilities. But with Duda ultimately expected to return this season, the Mets aren’t expected to make a major splash.

Collins had mentioned Conforto perhaps taking grounders at first base. The manager nixed the experiment before it gained any traction.

“We are not here to take a kid who has never played first base at the major-league level in a situation where we’re expected to win a lot and put an inexperienced guy at a tough position,” Collins said. “As I’ve tried to gingerly say it, this isn’t high school where you put the fat kid over at first.”

In the short term, utility man Eric Campbell continues to see time at first base. But Wilmer Flores (hamstring strain) is expected to rejoin the Mets shortly.

Though Flores is fully recovered from his injury, Collins indicated he will remain on his minor-league rehab assignment in order to accumulate more at-bats. Flores was hitting just .180 in 19 games when he landed on the disabled list on May 12.

Flores entered play on Friday 2-for-11 (.182) in three games with Double-A Binghamton.

Extra bases

Asdrubal Cabrera showed no ill effects in his return to the starting lineup after being scratched in the first inning on Wednesday. Cabrera scored a run after lashing a first-inning double. He also made a sliding stop at shortstop in the fifth. He had been sidelined with back spasms . . . Kevin Plawecki snapped an 0-for-17 streak with a first-inning single against the Dodgers and rookie Julio Urias on Friday.