Vedas are supposed to be divided in dwapara yuga. The current vyasa is Krishna-Dwaipayana, son of Parashara (who also was a Vyasa),and the author of Mahabharata who divided the vedas in dwapara yuga. The next vyasa after Krishna Dwaipayana Vyasa is Drona's son Ashwatthama.
https://www.sacred-texts.com/hin/vp/vp077.htm
These are the twenty-eight elder Vyásas, by whom, in the preceding Dwápara ages, the Veda has been divided into four. In the next Dwápara, Drauńi (the son of Drońa) will be the Vyása, when my son, the Muni Krishńa Dwaipáyana, who is the actual Vyása, shall cease to be (in that character).
My question is, who is the next Vyasa after Ashwathama?