Some AMD customers are asking for ARM-based processors, and AMD is willing to fulfill this demand. Moreover, AMD seems to be open to explore other architectures like RISC-V, as well. It is not yet clear what markets would benefit from the increased ARM demand, but, seeing that AMD is already planning to use Xilinx tech for its datacenter products, we could infer that ARM may be destined for Team Red's desktop and laptop product stacks.
https://www.notebookcheck.net/AMD-ready-to-diversify-its-portfolio-with-ARM-based-chips.562085.0.html