German phrase
Ich habe Bedenken bezüglich ~.
Meaning
I have concerns about ___
When to use it
It expresses gentle concern. Use it to point out worries about a proposal or plan.
Example dialogue
Ich habe Bedenken bezüglich deines Vorschlags.
I have concerns about your proposal.
Was genau stört dich daran?
What exactly bothers you about it?