The phrase "discussion whether" is grammatically correct and is commonly used in written English.
Example: The students had a heated discussion whether they should have a dress code for school events.
It seems to be up for discussion whether these will be painted over.
"It's open for discussion whether the hourly workers should get stock too".
"When we gave up the Lauren license, there was lots of discussion whether we should go after Calvin".
He added: "If it's up for discussion whether the court is playable, that means it's not playable.
The discussion whether to give Special Operations forces missions to capture or kill individual Qaeda leaders may at some point conflict with the executive order prohibiting assassinations.
He has no coherent plan, no view that can be mapped onto the common range of established discussion, whether left, right, or center.
Of course it's still open for discussion whether "Come for the ladies, stay for the legends" is sexist or just dumb.
Under discussion: whether or not to open a Wendy's outlet.
There is discussion whether the initial treatment modality influences the functional outcome after an arthrodesis.
The comparison especially is interesting in the discussion whether to treat non-operatively or surgically.
It was therefore long a matter of discussion whether these residues function as proximal histidine or as heme ligand.
