If considering for the premier league only then we’ve got as many as 5 squad spaces to add more players (and 4 could even be overseas players)
Club trained (1): Austin
Association trained (6): Forster, Davies, Spence, Maddison, Johnson, Solanke
Under 21 (6): Gray, Bergvall, Devine, Moore, Odobert, Lankshear
Overseas (13): Vicario, Udogie, Romero, Van Der Ven, Porro, Dragusin, Bissouma, Bentancur, Sarr, Kulusevski, Son, Richarlison, Werner
It would therefore perhaps make sense to consider keeping Regulion as cover at left back in the PL squad. Or we could sign a free agent.
For Europe we are a little more hampered due to the different rules for under 21 players…. So one of our senior players would have to miss out (maybe Forster with Gunter taking his place via the B list).
Club trained (1): Austin,
Association trained (4): Spence, Maddison, Johnson, Solanke
List A (17): Vicario, Udogie, Romero, Van Der Ven, Porro, Dragusin, Bissouma, Bentancur, Sarr, Kulusevski, Son, Richarlison, Werner, Gray, Bergvall, Odobert, Davies
List B (5): Gunter, Devine, Moore, Lankshear, Hall (lots of others will be on this list but I don’t think I see others playing)