Let's suppose that a person, who has no longer anything to lose and willing to drag an innocent along with him, sends money to an innocent via bank, calls the innocent person by telling them "I sent you the money for [such and such illegal act]" and hangs out immediately and blocks the innocent's number. The innocent of course, a per title, did nothing and every mean of comunication or electronic mean of the actual perpetrator is tracked, from bank accounts to phone number and social media, and the perpetrator does know this and by this is willing to involve this innocent person, and by the proper investigations, it is found that the perpetrator had contact with the innocent poor guy- What's the legal ruling on the innocent on this case? Can the innocent individual be dragged in court for messages and money he didn't ask for and for communications interactions not depending on him?
Let's make this concrete. You transferred $50,000 to my bank account, call me, and on the phone you say "as we agreed, I transferred $50,000 into your bank account to kill my wife". All that knowing that the police is tracing all your calls.
The police would obviously contact me. And question me. And search my home. And find that I have never done anything criminal in my life, that I don't have a gun, that there's no evidence that I'm preparing to commit a crime, and that they have nothing but hearsay that I have any intention to commit a crime.. Nothing.
So they would leave my alone after a while. I would never end up in a court. I declare that the $50,000 looks like a present to me and you can't have it back. Or more likely, that the payment was part of an unenforceable contract, and you can't have it back. I'd probably talk to the inland revenue to make sure they don't come after me. I might have to pay taxes on the $50,000.