He's had a tremendous year and coupled with the fact Bayern won the treble, I'd be amazed if he didn't win it.
I don't usually like this argument. It's an individual award so it shouldn't be about what his team won.
That said, Lewa would totally deserve it.
He should also be a very good example for many young players how far you can come by working hard. He was never rated highly as a teenager but still made a much better career than most if not all overhyped kids who were considered top 10 talents at that time. Too lazy to check so there is probably a player or two there who have also made a very good career but I'm pretty sure our own kids like Bojan and G2S were high on those top talent lists around 2007-09.