Is There a Problem for Human Freedom?

Boethius says that if God knows the future which he must because he's omniscient then it looks like that might pose a problem for human freedom. He argues that since we're dealing with firstly with knowledge so it's not God guessing but it's God actually knowing. But secondly because it's something in the past it's necessary in the way that the past is necessary you can't change it. So there the emphasis is on a vital stage in the argument where God has come to know it's a fact about the past.