Looking on the internet deeply has found these results:

I have no concern is the most popular phrase on the web.

I have no any concerns 10 results on the web	I have no concern 1339,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	It's no concern of hers whether I marry Celia. into active policy, then I will have no further concerns about its being acceptable to the public. If we translate this better approach "Amigo", you bring me 50 thousand and I have no more concerns. which is also perceptible in the Commission's proposals on Agenda 2000 How I discipline her is no concern of yours. In my position, I have no time to be concern about such trivial stuff. On the other hand, I have no concerns whatsoever about some form of monopoly or oligopoly emerging among rating agencies.

I have no any concerns

10 results on the web

I have no concern

1339,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

It's no concern of hers whether I marry Celia.
into active policy, then I will have no further concerns about its being acceptable to the public.
If we translate this better approach
"Amigo", you bring me 50 thousand and I have no more concerns.
which is also perceptible in the Commission's proposals on Agenda 2000
How I discipline her is no concern of yours.
In my position, I have no time to be concern about such trivial stuff.
On the other hand, I have no concerns whatsoever about some form of monopoly or oligopoly emerging among rating agencies.