'he debates whether' is correct and usable in written English.
You can use it to describe someone considering two options or questioning the truth of a statement. For example, "He debates whether he should buy a new car or wait until next year."
He is not about to change now as he debates whether Orb, his first Kentucky Derby champion who finished a disappointing fourth in the Preakness, should compete in the Belmont Stakes on June 8.
When it starts raining, he debates whether to keep walking, then pulls on a plastic hood, looks at the camera, and says, "We have a President who does not believe in climate change".
Stephen Roseman, founder of Thesis Capital, also agrees that high-end retailers will benefit from a rich customer base, even as he debates whether Coach and Tiffany qualify as truly high-end names.
(He debates whether to come clean, but instead quietly tiptoes away and re-enters through the adjoining public office).
Yet he debates whether the dreams that might plague us after death are worse than the trials and tribulations of being alive.
On Feb. 27 he debated whether Las Vegas was safe.
He said he debated whether to go to China.
He said he debated whether to bat him lower, but then decided that Wright was still an impact player.
He said he debated whether to use information from the support group, but decided that "I don't consider it a legitimate 12-step group.
Owner Ed Stanco said he debated whether to run her in the Oaks or in the Black-Eyed Susan, which serves as a prelude to the Preakness Stakes.
MacLean said Ratcliffe had spoken several times to Salmond and ministers in London as he debated whether to stick by Grangemouth.
