help knockin noise on audi a6 cracked mount

[lewis_duffield]

Hi everybody I have just bought a audi a6 s line quattro 3.0l v6 its was making a ncking noise when going slow over bumps or turning. So I look on mot test and had 2 advisory for the upper suspension bushes I baught them went to get them fitted and found this under the car. It looks like the bracket what holds the anti roll bar to the engine bed under the drivers side had snapped off. I will upload photos and could someobe please tell me what the parts called and how much to fix it.