Did God foreknow the rebellion in Eden, page-12

''I cant see how he would have known this would happen in advance , given that humans have free will''

Then this ''God'' you refer to is neither Omniscient or Omnipotent.

Nor, for the sake of argument, is your claim supported by the bible....if we are talking about that version of ''God''

''Declaring the end from the beginning, and from ancient times the things that are not yet done, saying, My counsel shall stand, and I will do all my pleasure:'' Isaiah 46-10.

New International Version
I make known the end from the beginning, from ancient times, what is still to come. I say, 'My purpose will stand, and I will do all that I please.'

New Living Translation
Only I can tell you the future before it even happens. Everything I plan will come to pass, for I do whatever I wish.