Juventus hearing about Alaba and the risk of Bayern losing him for free will ask them to exchange him with Douglas Costa (DC is actually in a yearly loan at Bayern).
I think that will be a very weird exchange. Alaba's contract expires at the end of the current season. So if he wants to join Juventus, he can do so for free. The Bosman rules state that he can start negotiating with other clubs after the January transfer window and Bayern have no say in this. Douglas, on the other hand, has two more years left on his contract with Juve.
Ozil has been offered at Juventus for 6 months with half of his salary paid from Arsenal.
Ozil hasn't played for way too long to be considered a reinforcement for the club in January. Juventus needs a fit player, not a mediocre one to go along wth the mediocre midfield they already have.
Small rumor, Juventus will maybe go for 6 months contract with LLoriente as 4th striker.
Considering the relationship Juventus has with Napoli, especially their president, any deal with them would be hard to reach. Unless they really want to get rid of Nando. I liked him during his first spell at the club so he could be useful coming in from time to time.
There is absolutely no way Dortmund can keep Haaland in the team.
Haaland's agent is Mino Raiola and the player will be sold the same way all the other players are sold for big profit.