Arsenal have confirmed a 24-man squad for the group stages of the Europa League with their A-List containing a couple of unfamiliar names.

The Gunners could have submitted a 25-man list if they’d included eight ‘locally trained players’ but they only mustered seven so the squad size was adjusted down accordingly.

According to UEFA, there are two categories that define a ‘locally trained player’:

Club-trained players – players who were on a club’s books for three years between the ages of 15 and 21. Hector Bellerin, Ainsley Maitland-Niles, Emiliano Martinez fall into this category.

– players who were on a club’s books for three years between the ages of 15 and 21. Hector Bellerin, Ainsley Maitland-Niles, Emiliano Martinez fall into this category. Association-trained players – players who were on another club’s books in the same association for three years between the ages of 15 and 21. No club can have more than four association-trained players among their eight ‘local’ nominees on List A. Rob Holding, Calum Chambers, Matt Macey and Hillson meet these requirements.

Goalkeeper James Hillson, 18, and Spanish left-back Joel Lopez, 17, have both been included on the A-list, usually reserved for established stars, because they aren’t eligible for the B-list.

A player may be registered on the B-List if he is born on, or after, 1 January 1998 and has been eligible to play for the club concerned for any uninterrupted period of two years since his 15th birthday (players aged 16 may be submitted if they have been registered with the club for the previous two years). Clubs are entitled to register an unlimited number of players on the B-List during the season, but the list must be submitted by no later than midnight the day before a match.

Hillson initially joined the Gunners on loan in February to cover for the injured Karl Hein and was offered a pro-contract in August. He put pen-to-paper on his deal at the same time as Joel Lopez, who’d joined the Gunners as a scholar in July 2018 from Barcelona.

Arsenal’s Europa League squad:

A-List: 1. Bernd Leno, 2. Hector Bellerin, 3. Kieran Tierney, 5. Sokratis, 8. Dani Ceballos, 9. Alexandre Lacazette, 10. Mesut Ozil, 11. Lucas Torreira, 14. Pierre-Emerick Aubameyang, 15. Ainsley Maitland-Niles, 16. Rob Holding, 19. Nicolas Pepe, 20. Shkodran Mustafi, 21. Calum Chambers, 23. David Luiz, 26. Emiliano Martinez, 27. Konstantinos Mavropanos, 29. Matteo Guendouzi, 31. Sead Kolasinac, 33. Matt Macey, 34. Granit Xhaka, 35. Gabriel Martinelli, 63. James Hillson, 74. Joel Lopez

B-List: 24. Reiss Nelson, 28. Joe Willock, 32. Emile Smith Rowe, 38. Folarin Balogun, 40. Tolaji Bola, 41. Robbie Burton, 42. Harry Clarke, 43. Trae Coyle, 45. Tyreece John-Jules, 47. Jordan McEneff, 48. Mark McGuinness, 49. Zech Medley, 52. James Olayinka, 53. Joseph Olowu, 54. Tobi Omole, 57. Matt Smith, 59. Zak Swanson, 61. Nathan Tormey, 69. Ben Cottrell, 76. Arthur Okonkwo, 77. Bukayo Saka.