I don't know if he's lucky, but, I can't let him sink.
I think you're very kind to have not reacted negatively to this presumption by your younger Brother.
I have not had very good experiences dealing with Relatives, particularly those who take me for granted.
40 years ago, I took a younger 12 year old Brother into our young household and raised him as a son until he was 19. Never a word of thanks. I guess he just thought that is what I was supposed to do.
Maybe 35 years ago, I helped a Sister (A) out by purchasing a new refrigerator. Never got paid back.
About 34 years ago, another Sister (B), having heard about the Refrigerator, thought that I should purchase a Washer and Dryer for her and the Father of her children at the time. I said no, as I didn't find that as much of an emergency at the lack of the Refrigerator (they do have such things as Laundromats). She got terribly upset and said I was showing favoritism.
Then my 3rd Sister (C) called about 32 years ago saying she and her then Husband were hurting real bad for money, and couldn't I loan them something like $5000 or so? I was a softy and loaned the money (interest free of course) for her to service a Sears Revolving Charge Card on which they had gotten over their head.
Sister (C) is a little odd . . . . she and that Husband later filed for Bankruptcy and were subsequently Divorced. The subject of that $5000 has arisen only once . . . . when she was looking for a new loan with a new "husband", and I had to say that I would think about it; but I'd be thinking harder if I had been re-paid for that other $5000. Well, didn't that ignite a fire-storm. She then told me that that $5000 was from way back when she was married to the other 1st Husband, and it should have been forgotten about when they went through bankruptcy and got divorced. I thought I loaned that money to her ONLY because she was my Sister . . . . I didn't know that 1st Husband from Adam; but I guess she thought I was loaning it to the Ex.
Maybe I'm just plain mean, and maybe my memory needs to weaken . . . . but I remember these things vividly. And I think I'd remember even better IF I had ever heard a "thank you"; but I don't recall any of that . . . . somehow it's just part of being the older brother I guess. Everyone else seems to have acquired "selective amnesia".
So Good Luck CandyMan . . . . I don't know what I'd do, but I don't like the presumption I detect. Knowing myself, I wouldn't be some kind of Suga-Daddy anymore. Are there any jobs up in them there hills? If not, your visitor may be there for only a short time . . . . or it could mean forever !
People sho' is funny, ain't they! Despite all that, it's still true that you can choose your Friends, and you can frequently choose your Neighbors . . . . but dem Relatives - you be stuck with them.