2008 Honda 420 4×4 front end knocking/clicking

I have a Honda rancher and started to hear a knocking/clicking coming from my front end. The noise would get louder when in 4×4 and under a load. At first I thought it was the differential side axle bearing. I took it apart because the boot was torn. After inspection the both axles looked fine on both ends. Any advise would be appreciated. Thanks!