After Russell Martin left the first team squad during the summer, the 45-year-old assumed control.
With Barnsley, Duff supervised a run to the play-off final last season, but a loss at Wembley Stadium in the dying moments consigned the Tykes to another season in League One.
But his success as a manager led to a transfer to the Championship with the Swans.
The Welsh club had a busy summer transfer window as they sought to assemble a side that might outperform their 10th-place result from the previous campaign.
Liam Cullen
In the January transfer window, who might leave Swansea City?
There is probably already planning on for what the club can do in the January transfer window to further enhance Duff’s team.
Nathan Wood
After Joel Piroe left Swansea for Leeds United, Cullen rose up the Swansea hierarchy.
Blackburn Rovers, however, are reportedly interested in signing the forward in January, according to Alan Nixon.
The forward’s current deal is coming to an end, so he might leave as a free agent this summer.
Swansea may therefore be forced to sell the player in order to get a fee for him in January.
Wood was a target for summer transfers, but he stayed with the Swans past the deadline of September 1.
As the defender nears the conclusion of his current contract with Swansea, he may leave as a free agent in the summer.
Numerous teams will undoubtedly be waiting in line to sign him if a new contract extension cannot be struck.
This may increase the likelihood of a sale in January because Swansea will not want to lose him for nothing.
Liam Walsh
Wood was a transfer target in the summer, but he remained with the Swans past the September 1 cutoff date.
The defender may leave Swansea as a free agent in the summer since his current deal with the club is about to expire.
If a new contract extension cannot be reached, many teams will likely be lined up to sign him.
Due to Swansea’s desire to avoid losing him for nothing, this may boost the chances of a deal in January.
Cameron Congreve
