What would you do?

[APHP]

co2ice--to answer your question directly !!.The answer is very simple if you follow the rules. Following the timeout, use the resuming of play procedure, if the player (and he is still a player till substituted for-which you will not allow till the free throw sequence is completed) is not in the circle when you are ready to adminster the free throw, it is a violation after 10 seconds. Since this is the second free throw, end of free throw(s). Then coach can sub for the player (even though he has not yet returned to the court). You may in fact tell the coach what will happen ahead of time---after all, this is what he wants.