The prevailing linear economic model is reaching the end of its life cycle as the continuous population and economic growth are endangering the access to vital resources. Urbanization has created significant concentrations of population, where the diminished supply of resources realizes. This positions urban areas to a focal role in developing a more sustainable economic model. Circular economy is an emerging economic model promising decoupling of economic growth from resource usage by increasing resource efficiency and circulating the resources. The city of Turku actively invests in the development of circular economy and pursuits to advance the opportunities of other cities to join the cause. This study will draw a picture of the current systemic circular state of Turku and analyze it through the Urban nexus framework. The method of the study is an inductive case study primarily based on expert interviews. The discussion verifies enablers of circular economy and evaluates the future development potential of circular economy generally and in the city of Turku. Based on the application of the Urban nexus framework and empirical date, an urban system circular transition management plan is proposed as a result of the study.