Buying two rented properties - Don't want the property manager

[Jeff Howard]

All,

Please help, considering two rented properties... the properties were rented 2 months ago using a property manager.  When I buy the properties I do not want to use their manager, I have my own property manager, but that is my wife.  I do not need nor want to pay a property manager. 

1. Am I forced to continue that contract?

2. If the answer to 1 is not necessarily, how can I prove, or make sure I don't have to use them?

Thanks in advance.