New front brakes dragging noise

I recently had my front rotors, pads and sensor replaced with OE parts in my M3 ZCP. I was just wondering if it's normal for the brakes to produce dragging noise (when very slowly freewheeling to a stop or turning) when new? About how long should it take for the brakes to seat properly and for the noise to completely dissipate or should I take it back to the shop? Thanks in advance!