Keillor-Dunn, who had a brief spell with Wrexham in 2020, went on to thrive at Oldham Athletic and then Mansfield Town before landing a move to Barnsley in 2024.
In all the Sunderland-born player has scored 35 goals in 78 appearances for the Tykes.
Cadamarteri, who joined Wednesday when aged nine, made his league debut for the Owls when aged 18 in November 2023.
He scored five goals in 25 appearances in the 2023-24 season before netting eight times in 31 games during a loan spell at League One Lincoln City last season.
Leeds-born Cadarmarteri has scored twice in 30 games for Wednesday in this campaign, while he has also won four caps – and scored once – for Jamaica having opted to play for the Reggae Boyz after representing England at youth level.
After Wrexham’s weekend win over Wednesday, in which Cadamarteri played 90 minutes, boss Phil Parkinson said: “Bailey is powerful, he’s strong, he makes good runs and I thought he worked really hard for the team today.
“At this stage we’ve looked at lots of options and if we bring in one or two players I’ll be pleased, if we don’t I won’t be too disappointed.”
