The current building will be repurposed for other city departments to alleviate having to build for them.
As for keeping it a PD and building another somewhere further south, it's been said in past threads to great extent why that isn't the best option. One large reason is duplication of services between two buildings. It gets just as costly pretty quick. Like Bryan, CS isn't large enough (geographically) for two stations to make practical sense when most patrol officers aren't using the station during their shift. Their job is to be it and about, spread over the city. Nonpatrol officers, support staff, and evidence storage are who/what's piling up in the current building. There is also no space for training in the current facility because what was used for it has had to be reallocated for other things over time.
With all the outrage over where the building is and why a new larger building instead of additional building, it begs the question, "Was there similar outrage when Bryan built a larger facility right across the street from their old one?"
Question: Why is BC 911 superior? CS has one of a very few number of accredited dispatch centers in the state.