That would depend on what is actually found in the ruins. The city's name is Rhapta, and the professor you refer to is the archaeologist Felix Chami. Here is an article he co-authored that tells you about what we currently know about Rhapta. (This article seems to be undated, but because of the dates of the sources he cites it must have been written no longer than about 5 years ago.) http://www.academia.edu/15058889/Metropolis_of_Rhapta_and_Azania