MK4 golf 1.6 SE T reg Auto 65k

Bit of a odd problem to describe. When steering left or right there is a
noise not a grinding as such but a gentle whine which changes in tone
the more I turn or change steering direction. After driving for 10 mins
their is no noticeable noise just at startup.

The car has a new ribbed belt for the PAS aswell.

Just wondering what it could be or if something major is lurking.

Thanks