Reporting after horn

[orangeump]

here is a good question for you folks at home that I thought of today.

here is the play, pretty simple layout.

foul is called, two shots will be awarded.

time out is called.

sub checks in after first horn. obv cant come into the game anyway. after the first free throw is the sub allowed to come into the game?

edit: why do I ask questions that I know the answers to?