MN 72 - Why is a freed mind not "not reborn"? Three translations of Bhikkhu Sujato say: 


  But Master Gotama, when a mendicant’s mind is freed like this, where
  are they reborn?
  
  Evaṃ vimuttacitto pana, bho gotama, bhikkhu kuhiṃ upapajjatī ti?
  
  ‘They’re reborn’ doesn’t apply, Vaccha.
  
  “Upapajjatīti kho, vaccha, na upeti”.
  
  Well then, are they not reborn?
  
  Tena hi, bho gotama, na upapajjatī ti?
  
  ‘They’re not reborn’ doesn’t apply, Vaccha.
  
  “Na upapajjatīti kho, vaccha, na upeti”.
  
  MN 72
  
  
  
  Seeing this, a learned noble disciple becomes disillusioned with form,
  feeling, perception, choices, and consciousness.
  
  Evaṃ passaṃ, bhikkhave, sutavā ariyasāvako rūpasmimpi nibbindati,
  vedanāyapi nibbindati, saññāyapi nibbindati, saṅkhāresupi nibbindati,
  viññāṇasmimpi nibbindati.
  
  Being disillusioned they become dispassionate. Being dispassionate
  they’re freed. When freed, they know ‘it is freed’.
  
  Nibbindaṃ virajjati; virāgā vimuccati. Vimuttasmiṃ vimuttamiti ñāṇaṃ
  hoti.
  
  They understand: ‘Rebirth is ended, the spiritual journey has been
  completed, what had to be done has been done, there is no return to
  any state of existence.’
  
  ‘Khīṇā jāti, vusitaṃ brahmacariyaṃ, kataṃ karaṇīyaṃ, nāparaṃ
  itthattāyā’ti pajānātī”ti.
  
  SN 22.59
  
  
  
  The sage at peace is not reborn, does not grow old, and does not die.
  They are not shaken, and do not yearn.
  
  Muni kho pana, bhikkhu, santo na jāyati, na jīyati, na mīyati, na
  kuppati, na piheti.
  
  For they have nothing which would cause them to be reborn. Not being
  reborn, how could they grow old? Not growing old, how could they die?
  Not dying, how could they be shaken? Not shaking, for what could they
  yearn?
  
  Tañhissa, bhikkhu, natthi yena jāyetha, ajāyamāno kiṃ jīyissati,
  ajīyamāno kiṃ mīyissati, amīyamāno kiṃ kuppissati, akuppamāno kissa
  pihessati?
  
  MN 140


Why does MN 72 say  "not reborn" does not apply to the freed mind (vimuttacitto) but SN 22.59 and MN 140 say "rebirth is ended" and the arahant is "not reborn"?
Well then, are they not reborn?
Tena hi, bho gotama, na upapajjatī ti?
‘They’re not reborn’ doesn’t apply, Vaccha.

I would suggest it has to do with the way this question is formulated. It's not about rebirth having ended but about pointing to a person because of the use of the word 'they'.
Talking about a 'they', 'him', 'her' doesn't apply anymore. So, the question is wrongly put.
That's my take on it.