Humming and knocking sound

[Cvija]

Hi,
I already searched a forum and I can't seem to find the same problem I had.
When I turn left the sound appears like humming sound and a knocking sound in the background.
This only happens on certain angle of steering wheel, and only when turning left.
I also tried to press a clutch when sound appears, and in that moment sound is gone.
Is it a gearbox or just a stupid bearing or is it something else?

Cheers