The bookies often get the BB winner wrong but my perception is they get weekly evictees right about 90% of the time.
So, in this case, it is
probably bye bye Ben!
Latest odds:
Ben 4-7
Dave 5-2
John James 16-1
Andrew 22-1
John James and Andrew look almost 100% safe. Just a chance Dave may go rather than Ben, but I'm inclined to doubt it.