The purpose of this paper is to develop insight into the linked processes of migration and entrepreneurship. By combining the literatures on network dynamics and on effectuation, we link the processes of embedding in networks (proximation) and de-embedding from networks (distanciation) to opportunity creation. We use the principles from effectuation theory of ‘bird in hand’ (using available resources) and ‘crazy quilt’ (selected use of networks) to develop a framework of migrant entrepreneurship. We use data from 28 in-depth interviews with Polish migrant entrepreneurs in Glasgow, United Kingdom. Following an abductive process of data analysis, we combine the themes emerging from the data with those in the existing literatures to propose our framework. Our findings show that migrant entrepreneurs’ embeddedness is dynamic and evolves across three types of networks: the origin country networks, the host country migrant networks and the host country indigenous networks. We found that migrant entrepreneurs become relationally, socially, and structurally embedded, often relying on bridging agents to access indigenous networks. Migrant entrepreneurs then leverage resources to create opportunities in the host country’s markets. Based on these findings, our framework considers the role played by multi-dimensional and evolving embeddedness in different networks in the process of opportunity creation.