Assalamu Alaikum, I am working ina audit firm one...

Assalamu Alaikum, I am working ina audit firm one client is asking me to join their coopany if i join there our audit firm will loose the client. And also I have signed seperate internal contract apart from the normal MOHRE contract. Where they have mentioned that I can't join for one year with their client. Therefore pleaae let me know whether company have another agreement apart from the MOHRE conract.