The Croatian never got to play a game at Besiktas' new stadium as it is still under construction a year overdue.
Atdhe Nuhiu has played 10 times for Sheffield Wednesday this season, scoring three times.
Sunderland meet West Ham United in Premier League action on Saturday.
After a handful of games, the 19-year-old Tottenham Hotspur midfielder is in the senior squad - yet his superb team-mate has to settle for the Under-21s.
Linked with moves to the likes of Arsenal and Chelsea, a trip to Anfield with FC Sion offers Moussa Konate a great chance to impress.
The Nigerian attacker has been in good form recently for the Norwegian club.
Jacob Butterfield has played four times for Derby County since joining the club from Huddersfield Town.
Bristol City loan signing Liam Moore has undergone a successful hernia operation.
The former Liverpool striker scored a second-half equaliser as his side beat the Philadelphia Union 7-6 on penalties following a 1-1 draw after extra-time to take home the 2015 title.
The West Ham forward has returned to first-team training.