Beckham has been battling a hamstring injury all training camp and is yet to appear in the preseason game.
"How about practicing before you play?" Coughlin said on Monday.
The starters will get just 15-18 snaps in the preseason finale, Coughlin said.
No sense rushing him now. He knows the playbook but does not have the reps or timing down as of yet.
My guess is they continue with Jerrel Jernigan and Rueben Randle in the outside with Victor Cruz naturally in the slot.
Corey Washington can get some looks as well, especially in the red zone.