Perhaps someone can correct me if I'm wrong, but this is the first I'm reading of such a specific desire for Big Ten expansion to reach into the south.
If the two biggest factors are "gaining a foothold in the south" and "lucrative television markets", I can't see any target bigger than Texas. As one who cringes at the thought of Rutgers and UConn joining the Big Ten instead of Texas and anybody, this is good news. Yes, NYC is the giant media market, but with Texas you get Dallas and Houston - two of the top ten markets nationally.
Maybe I'm just hoping (rather than reading) between the lines, but no matter how big the NYC market is, it isn't located anywhere near the Sunbelt...and Rutgers is about as exciting as Everybody Loves Raymond.