The on-loan defender is able to play against QPR in the final game of the season at Loftus Road.
Read more from new signing Fitz HallLoan Ranger Fitz eyeing United switchToon shirt Fitz me at long last! And Hall could be in a position to deny QPR a play-off place on May 2.
"It's a mad one, because we've got them on the last game of the season, and it could all boil down to that game," Hall told the Gazette.
"And I think I'm allowed to play in that game.
"QPR have been a top club themselves. They're going through a bit of a rough patch.
"Obviously, I'm here, but I wish them all the best – I could be going back there at the end of the season."