Finding Module Than Can Make Client Tranfer credit funds into another client

[QenvingQ]

Hello, i search module that can transfer credit funds into another client.
The Feature :

Client :
1. Can be send in another currency and auto convert into user currency
2. Only Client that already bought product atleast 1 item from website.

Admin :
1. Can set fee or limit transaction
2. Can check logs transaction 

I have $10 - $20 to pay if must do.