MIAMI — Mets catcher Travis d’Arnaud is expected to begin a rehab assignment this weekend, when he will serve as the designated hitter during Florida State League games, manager Terry Collins said on Friday.

Though d’Arnaud’s throwing is still lagging behind, he will begin to see game action at the plate. D’Arnaud has been on the disabled list April 26 with a strained right rotator cuff.

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“It’s a ways away throwing-wise,” Collins said of d’Arnaud, who has already been the designated hitter during extended spring training action. “I just think it’s important to start getting some at-bats.”

D’Arnaud was hitting .196 before he went down with the injury.

Despite an opening at first base created by Lucas Duda’s back injury, Collins said the Mets have no intention of trying d’Arnaud at first, a possibility he had raised in the offseason