Pascal Siakam has been mildly disappointing for fantasy basketball this season despite being an all-star-caliber player in the NBA. As a fantasy basketball manager, I want Siakam on my team. If you can pry him away for less than his ADP price, it could be the optimal time to buy. Another player to consider buying low on is Jaylen Brown. Alternatively, if you roster Fred VanVleet or Alperen Sengun this could be your best-selling opportunity. This is your sell high and buy low column for Week 16 of the fantasy basketball…