I left a message on a piece of paper to my flatmate saying that I will probably be sleeping deeply when she will come back home so I asked do not forget lend me something.
Could you tell me if my sentence is correct ?
If you are asking us about the whole sentence being correct, why do you only highlight two sections of it?
My note to my friend ZYXWV, would read...
Hiya ZYXWV, I will probably be sound asleep when you return, and as I probably won't see you before I have to leave, will you please remember that I asked you to lend me the ABCDEF? It would appreciate it if you could leave it on the kitchen table. Thanks. Maxiogee.
PS Hope you had a good night.