Maffeo made his competitive debut for City on 24th. August 2016, starting in a 1–0 victory
over FC Steaua București in the play-off round of the UEFA Champions League.
His second start came two months later, in a 0–1 loss at Manchester United in the EFL Cup.
His 3rd. and final appearance was against Celtic.
Champions League. Group C.
Manchester City (1) v (1) Celtic. (Roberts 4m, Iheanacho 8m) City of Manchester Stadium. 06/12/2016.
Manchester City:
13. Willy Caballero (GK), 3. Bacary Sagna, 5. Pablo Zabaleta (C), 6. Fernando, 8. İlkay Gündoğan, 9. Nolito,
19. Leroy Sane, 22. Gaël Clich, 50. Pablo Maffeo (15. Jesus Navas 62 min),
53. Tosin Adarabioyo, 72. Kelechi Iheanacho.
Celtic:
1. Craig Gordon, 3. Emilo Izaguirre, 5. Jozo Šimunović, 8. Scott Brown (C), 10. Moussa Dembélé (9. Leigh Griffiths 73 min),
14. Stuart Armstrong, 18. Tom Rogic, 23. Mikael Lustig, 27. Patrick Roberts, 28. Erik Sviatchenko,
49. James Forrest (16. Gary Mackay-Steven 51 min).