Hi
,
Thanks for posting. The phrase '누구 만날 거예요?' means 'Who are you going to meet?'
The phrase '누가 만날 거예요?' literally means 'Who is going to meet (the person implied in the previous conversation)?' but it is not the most 'natural' sentence and is usually not used.
Sincerely,
Lyn
Team KoreanClass101.com