What your purpose to have this coin?
is that important ? he only ask for a wallet , nothing more .
This coin is not suitable to hold, you better use this coin for a trading fair like USDT-BTC which many trader use.
what if he isnt a trader? lets not force the guy to do trade . we dont know if he is a gambler or he is a company owner and wants to buy or pay his workers using a stable coin because this is better than using a common crypto . most importantly usdt is suitable for hodling
You can choose an exchange, yeah I think almost crypto currency exchange will provide a USDT wallet.
storing funds on exchange is risky