Mancini revealed that he and Italian national team technical director Claudio Ranieri have both been in contact with the 22-year-old, who has emerged as an attractive option for the Azzurri after an impressive start to the season in Belgium.
Tresoldi was born in Cagliari to an Italian father and an Italian-Argentinian mother, but moved to Germany with his family as a teenager. He has represented Germany at youth level and remains a regular for their Under-21 side, meaning he has not yet committed his senior international future.
Argentina is also an option through his mother's heritage, although the immediate competition for his services appears to be between Italy and Germany.
Speaking at Coverciano ahead of Italy's Nations League fixtures against France and Belgium, Mancini explained that the decision ultimately belongs to the player.
"I spoke to Tresoldi, and Ranieri has spoken to him too. He needs to feel that he wants to play for Italy," the coach said.
"But given that he was born in Italy and his father is Italian, I think there could be a possibility. Ultimately, it is the player who has to make the decision. He knows that we believe he could be important for us."
Tresoldi's performances for Club Brugge have strengthened the interest in securing his international allegiance. He has scored 14 goals in 17 appearances across competitions during the 2026-27 campaign, including five goals in four Champions League matches.
His overall record in Belgium has also been impressive, with 37 goals in 74 appearances for the club. Those numbers have attracted attention beyond the international debate, with the forward establishing himself as one of the most productive young attacking players in European football.
Italy are particularly keen to identify emerging talent with dual nationality as they look to strengthen their options for the future. Mancini acknowledged that other national teams are pursuing similar players, making it important for the Azzurri to establish relationships before decisions are made.
"We're not the only ones doing it. All the national teams look at players with dual nationality. If they're good, we try to bring them in," he explained.
Mancini also pointed to the success of Italy's recent efforts to secure young players, mentioning defender Matteo Palma, who had also been considering his international options before becoming involved with the Azzurri.
The coach believes the national team must continue identifying talented youngsters rather than relying solely on established players from the country's biggest clubs.
"There was a time when national team coaches had the advantage of calling up groups of players from Juventus, Milan and Inter. That's no longer the case," he said.
Italy's immediate focus is on their Nations League matches against France at San Siro on Thursday, November 12, and Belgium in Brussels on Sunday, November 15. However, Mancini's comments have made clear that the longer-term recruitment of players such as Tresoldi is also an important part of his planning.
For now, the striker's international future remains unresolved. Italy have made their interest clear, and the conversations with Mancini and Ranieri demonstrate that they are keen to persuade him. Whether Tresoldi ultimately chooses the Azzurri or continues his international career with Germany will be his decision.