'be a potential issue' is correct and can be used in written English.
You could use it when referring to something that might potentially become a problem in the future. For example: "Climate change could be a potential issue if we don't take steps to reduce our carbon footprint."
The car park could be a potential issue for front-facing rooms but once the drinkers have gone home, all you can hear is the low, relaxing purr of the sea.
He seemed bemused by any suggestion there would be a potential issue with Liverpool's transfer committee, explaining that he had "the first and the last word" and that it had not troubled him for even 10 seconds, and there was certainly no need for him to apologise for his English.
He said the government was "not accepting there is going to be a potential issue at Portsmouth".
The viability of recovered NK cells can also be a potential issue for NK cell-based immunotherapy.
To a lesser extent, this may be a potential issue for total and non-durable expenditure as well.
However, even if systemic release is found to be a potential issue, waiting two or more weeks before adjuvant ablation will allow nearly all the infused radioactivity to decay, minimizing safety concerns.
Said Mr. Ebenhoch, the spokesman: "Every time it spills, it's a potential issue".
High petrol prices are a potential issue in November's US presidential election.
Occasionally Jon has to accommodate his twin 18-year-olds, so the back seats are a potential issue.
However, heat can also transfer and reduce the temperature gradient, while spillage is a potential issue for liquid electrolytes.
Of course, the people who come up with these ideas have probably never lived in the kind of district where this kind of problem is a potential issue.
