A ticking noise

[Moedad]

I think my bike was dropped sometime before I bought it. The tip of the clutch is scratched as is the corner of the front fender, but what I'm wondering about is there is a slight ticking noise coming from the front wheel that matches the rpm of the wheel when it rolls. It also clicks when it rolls backward but even more slightly. Doesn't seem to be anything visible rubbing, but thought I'd ask and see if there were any ideas from the experienced group here of what to look for. Can't say for sure it wasn't there before and now I'm just noticing it because I'm listening for something. Any suggestions would be appreciated.

Update: When I had the bike serviced week before last (seven months later), I asked them to check it and the mechanic said everything was fine.