By Wilton Jackson The Celtics big man could potentially return for Boston on Saturday against Brooklyn. View the original article to see embedded media. Robert Williams could be back on the court for the Celtics very soon. The Boston center is reportedly close to returning and could play in Game 3 on Saturday or Game 4 on April 25 against the Nets, according to The Athletic’s Shams Charania. However, the final decision on Williams status will be made based on how he feels from day-to-day, per Charania. The update on Williams comes more than two weeks after Celtics head coach Ime Udoka said in …