Let your friend find his deal.
If he has already a method of dealing with others and exchanging it then that's much better. Rather than you finding a way for him, I see that you're just helping him but if there's an existing method he knows.
Let him do it first.
That's the safest way since he is not the one who needs the fund and also there are chances of being scammed exchanging Paypal to USDT.
there are several issues in the past that has the same problem as Paypal is reversible and we cannot take it back then.