A sale would represent a capital gain for Roma, who signed the Polish defender on a permanent deal in 2025 for a fee of €6m, a relatively modest outlay given the player's subsequent development.
With financial fair play issues continuing to affect the Serie A club, Ziolkowski's departure is seen as one possible route to easing those concerns.
According to ASRomaLive, talks between the clubs slowed following a management change at Forest, understood to refer to the departure of Lina Souloukou from her role at the City Ground.
Souloukou had built a good working relationship with AS Roma during her time in Italian football, and her exit is said to have temporarily stalled discussions over the 21-year-old.
Despite that setback, Nottingham Forest remain keen on Ziolkowski, with the club described as eager to push ahead with a deal once the situation allows.
Roma, meanwhile, have shown fresh interest in Forest defender Nicolo Savona, a development that could help bring the two clubs back to the table over Ziolkowski.
The two deals are understood to be entirely separate, with Roma needing any sale involving Savona to register as a distinct capital gain for financial fair play purposes.
Roma are reported to be confident of signing Savona for a fee of around €17m, which would also represent a healthy capital gain for Forest, who paid Juventus €12m for the defender last summer.
Ziolkowski's own valuation has not been specified, though it is understood to sit in the region of €20m.
Any renewed talks between the two clubs are likely to move forward on parallel tracks, with the outgoing and incoming deals negotiated separately even as the wider relationship between Forest and Roma shows signs of warming again.
Forest's interest in young, technically capable centre-backs has been a consistent theme of their recruitment in recent transfer windows, and Ziolkowski's profile is seen as fitting that approach closely.
The Pole has made a strong impression during his time in Rome despite limited senior opportunities, with his composure on the ball and reading of the game drawing comparisons to more experienced defenders at the club.
Forest's hierarchy will be hoping that a resolution to the management uncertainty at the City Ground allows talks over Ziolkowski to gather pace again in the coming weeks, particularly given the level of interest already shown in the player from elsewhere in the Premier League.