Cotterill missed the midweek win over Watford after failing a late fitness test on a hamstring problem but could be ready to take a place in the squad this weekend
If the 22-year-old doesn't make it in time, Cedric van der Gun is likely to retain his place.
Sousa will once again be without the suspended Gorka Pintado, who is serving the final game of a four-match ban.
Garry Monk and Fede Bessone are both still out with calf injuries and Andrea Orlandi and Albert Serran are struggling to overcome their respective hamstring troubles.
Jordi Lopez's ankle problem is still proving problematic, while Ferrie Bodde and Joe Allen (both knee) remain sidelined.