Karim Adeyemi, Jobe Bellingham and Nico Schlotterbeck are being linked with transfer moves at the moment, and our sources have been trying to uncover the likelihood of the trio actually leaving.
The most high-profile exit would be that of Adeyemi, and Dortmund are hopeful they can prevent him from making a departure.
His pace and effectiveness in the front line has been impossible to ignore as a key component of their early-season success, with BVB undefeated in the Bundesliga and sitting second in the table.
He has three goal contributions in the league as well as a further three in the Champions League, where Dortmund have drawn with Juventus and thrashed Athletic Club.
There is now speculation that Barcelona are becoming more convinced they should make a move for the player - but Dortmund are willing to fight to keep their 23-year-old German star.
He is currently contracted to the club until 2027, meaning they are in a strong position to put a high valuation on his head. But further than that, we understand they are also willing to discuss new contract terms with him at the turn of the year.
Given Barca’s financial situation - and the fact they are likely to be in more need of a traditional centre forward next year - there is a belief among sources that the club could keep him out of the Spanish side's clutches.
The situations of Bellingham and Schlotterbeck are also on the agenda.
Schlotterbeck has a contract situation similar to Adeyemi - and the club does want to renew soon, amid interest arising from Real Madrid and Bayern Munich.
The defender is in a strong position to negotiate his next deal, and Dortmund bosses concede they may have to show a true openness to his financial demands to convince him to stay - rather than join a rival.
Meanwhile, Bellingham is thought to be frustrated with his start to life at the club as the 20-year-old midfielder has started only three of their eight games so far.
Dortmund believe he does still have a promising future with them and that this approach to his time with them should not come as a surprise. He is new to this level and new to the country, and they always intended to ease him in.
He has featured in both Champions League games so far, which is a reflection of their belief in him.
Dortmund have made a strong start to this season on the pitch - now they need to ensure it is not derailed by matters away from the field.
