If this is Lou Williams’ last year in the NBA, a big music career could be part of his retirement plan … ’cause rapper 2KBABY tells TMZ Sports he’s spent hours in the studio with the hooper — and they have a bunch of songs ready to drop!!! The 35-year-old Atlanta Hawks guard recently spoke out about his future in the league … saying 2021-22 could very well be the last time we see Lou Will on the court.