New concept to/for you!

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hi guys,

Is it correct English to say: It is a new concept to you?
Or It is a new concept for you?

What should I use here to or for?

Cheers,

2

I am not familiar with either of your two sentences.

This could be a new concept to you.
Is this a new concept to you?
Could this concept be new to you?
This new concept is for you.

Thanks

3

Either is fine.