Ariycam sen beni. Ne zaman musait oluyosun

Thanks!

Well, first sentence has unintelligibility. I mean i cant comprehend which one of you is calling. You or the person you speak with?

I think the second sentence can be translated as ´when are you convenient´ Instead of using ´oluyorsun´, you should use ´olursun´, i cant express this accurately but when i use this sentence in daily speaking, i always form it with simple present tense(geniş zaman) so i think u need to use ´olursun´ instead of ´oluyorsun´ so that it wont sound rather odd.

I thought the same. It probably should be:

Ben arayacağım seni

- I will call you