7 millions investment for a healthy rental yield %

Dear all / experts / gurus,
i am an overseas pakistani and have a hard earned money of 7 millions to invest in islamabad for a healthy rental yield, the purpose is a good rental income, a good roi after 4 years and an area which can easily be disposed/resale if required. I am opting for shop or 2 beds flat.
please do comment jazakallah.