A few years ago I lent a friend a not insignificant amount of money. Hindsight is 20/20 and all that so the details are irrelevant. At the time he was grateful and making all the right noises about regular payments.
Gradually those 'payments' became £5/week, which most of the time never showed up 
I was left in the infuriating position of 'reminding' him and feeling petty over a fiver, or ignoring it and implying it was okay.
I realised that this was some weird power play on his part; he felt that the balance of power in our friendship had shifted in my favour and he didn't like that, so this was his way of wrestling it back by making me go to him for my own money 
I walked away from the friendship and although I felt stupid and angry, I did feel better for it. Recently he messaged out of the blue offering the money back (in one go) and apologising. We have been trying to arrange a meet up but both of us have been guilty of trying to cancel so I'm not blaming him for this part.
The thing is, rather than just transfer it, he's saying he wants to do it 'in person' i.e. hand over an envelope of cash 'because it feels more appropriate/respectful to our friendship/I can apologise properly/sincerely' blah blah. The reality is I suspect 1) he's tax dodging and doesn't use his bank, and 2) it's another power play, the big gesture of him being so magnanimous to return the money.
I'm happy to indulge his stupid power games if it gets me the lump sum, but we were due to meet yesterday and he bailed 30mins before we were due to meet, saying he was stuck at work may or may not be true. We've rearranged for this evening.
He doesn't know that if he bails again I'm walking away for good. I'd already written the money off, this feels like 'free money' now but I am not engaging in any more power plays.
So, sorry this is long but based on the above, how do you think today will go?
YABU - He'll turn up tonight and pay in full
YANBU - He'll bail or stand me up and I'll get nothing
Option C - he'll hand over some and then bleat about regular payments again trying to suck me into the power cycle again not happening
Or something else? Anyone saying 'walk away from the drama', I will, but I am really curious as to how this plays out today.