not out of bounds???

[chayos]

If player A goes out of bounds and DOES NOT RETURN and tips or bats a pass the play is dead. The pass is incomplete. Art 2.28.1 "A player or other person is out of bounds when any part of the person is touching anything, other than another player or game official, who is on or outside the sidelines or end line.

So if the player is out of bounds and makes no attempt to re-enter the field o play as soon as he touches the pass it is incomplete.