There are in depth articles in today's quality press which would lead to more than a little doubt on circumstances, causes and fault. It seems far from certain that your assumptions are correct and more than a little wise to hold back on payment and wait for verification.
If that’s on the basis that thd transfer is a bit iffy and the use of agents is the same then ultimately they should have stepped away before signing him rather than having an issue now . If it’s something else then maybe I will mate