So I've been hearing a weird sound at low speed son the front section of my XT660X. The best way to describe the noise is that it sounds like there's some twigs stuck in the spokes, constantly knocking when I ride. It sounds like a noise the chain would make but I am certain it's from the front part of the bike.

I've checked and everything seems fine, nothing seems loose. Bit worried it's something worse.

Does anybody have any ideas before I go to the garage with it?

Could it be from the engine? I don't hear it when I am wheeling the bike.