Steering column clunk and wandering

[texas2201]

car was in having the bumper fixed from when my wife had an argument with a supermarket car park - the Audi lost

The mechanic mentioned that when he was manoeuvring the car he could hear a clunk from the column and then on test drive it was wandering and needs constant correction

His suggestion was that maybe a UJ was worn in the column?

Does the A8 have UJ's in the steering column?

if not does this mean a new column needs to be fitted? How big a job is this?