We have similar situation. Player A is unhappy with playing time. They haven't said it directly to me, but I can tell, and parents talk about it in stands. Other parents have verified it. Another Coach called the other day and let me know that Player A attended an Open Practice with his team. Now I have to decide if I let it play out (they will almost 100% leave), or if I avoid drama during next tourney and cut her now and move on.