Dortmund seems to have done most of our transfer business already for the summer.
Incoming: Meunier (free), Bellingham (Between 20-25M euros), Can (loan becomes transfer for 25M euros)
Outgoing: Goetze (free), Oelschlaegel (free)
Potential Incoming: Fullback (Hakimi/LB), Striker (back up #9), Winger (if Sancho leaves)
Potential Outgoing: Akanji, Schulz, Schmelzer, Dahoud, Delaney, Sancho, current loan players (Passlack, Toljan, Toprak, Burnic, Gomez, Schurrle, Wolf)
Third keeper for training Oelschlaegel will leave, and his spot will be taken by youngster Unbehaun, who was probably already ahead of him on the depth chart if either was actually needed. Meunier will come in and be the immediate starter at RB/RWB/RCB, depending on the formation. If Hakimi returns, I think he might play on the left side. We don't have anyone reliable there. Guerreiro is a good LWB, but can't play LB effectively. We also have Morey whose shown well on the right side, and Piszczek is still around, so we have plenty of right-sided options. If Hakimi doesn't return, I could definitely see us bringing in another LB. Schmelzer can't play anymore and Schulz has had a terrible first season. We might or might not give up on him after one season, but he can't be relied on.
Akanji is an under the radar candidate to leave. Has a bigger market than he should have, hasn't performed well in over a year, and he doesn't start anymore for us. Can can fill the mobile CB role. He was supposedly brought in more as a CB than CM, and our two best CB's are Hummels and Zags, anyway, so Akanji might be 4th on the depth chart. Piszczek can play CB in a back 3, and Balerdi is an option there, as well, although Favre only uses him at DM. We'll see if there's a new coach who wants to use Balerdi differently, but he's more of a natural CB.
One of Dahoud or Delaney were probably going with Can coming in, and now I think both might leave with Can and Bellingham coming in. I suspect Can is the starting box to box midfielder and Bellingham will be the back up. You don't spend that much on a player to not play for a full season. He'll get his games. And Brandt in a more offensive look for that position is also still an option. I'm not convinced Dortmund brings in a replacement for Sancho, if he leaves because we have plenty of winger options (Reus, Hazard, Reyna, Brandt, Guerreiro, potentially Hakimi), but we also might do so. I'm also not convinced he'll leave.
Goetze leaves on a free. Couldn't agree to wages with the club. Favre ostracized him this season after changing to a formation that Favre claimed he doesn't fit. I don't think its smart to let a coach who might not be back dictate if you keep a key player, but Brandt is able to do a lot of the things Goetze did. Back up CF is something we needed this season, but might not next. Reus is probably the back up #9, but he was injured at the same time as Haaland. You probably need three guys who can play that position. I think Reyna could because of his size, but Favre didn't want to use him there, which didn't make sense to me. With Moukoko being eligible at the end of November though, we might be able to go with only Haaland and Reus for the beginning of the season.