In the state of Wisconsin, can new owners of a duplex that is currently being rented out to tenants (recently signed a year lease with the previous owners), kick out the current tenants if they want to reside in the home, or for any other reason?

As soon as you bought the premises you also agreed to abide by the lease that the tenants were covered by, so you can't do much about kicking them out without reasonable cause.

You're right Akbar.As soon you bought the premises.