Bayern Munich defender Jerome Boateng is not expected to return to action before March and could miss the Champions League tie against Arsenal.
Schalke have confirmed their interest in Bayern Munich's Holger Badstuber, but Carlo Ancelotti has said he will only be allowed to leave on loan.
Upamecano, 18, has decided to make the switch to Germany, football magazine kicker reported.
Mario Gotze has said he has never worked under anyone like Borussia Dortmund boss Thomas Tuchel, telling reporters: "He is a very special coach."
Gabbiadini joined the Azzurri from Sampdoria for €12.5 million two years ago and is expected to be sold on for almost twice that.
Carlo Ancelotti has spoken exclusively to ESPN FC, while Cristiano Ronaldo, Lionel Messi and Antoine Griezmann are hoping to be crowned The Best.