Drexel University is scheduled to announce Wednesday afternoon that it is partnering with Brandywine Realty Trust for the development of its Innovation Neighborhood. Drexel sought a master developer for its so-called Innovation Neighborhood, a 10-acre swath in University City that, when built out, could have more than 5 million square feet of new space. It would be an investment that would cost billions of dollars once completed and take years to execute.