The Sun says the misfit striker, 22, travelled with the Manchester City squad for tonight's clash at rock-bottom QPR.
He then hopes to fly out to Italy tomorrow morning to complete his return to Serie A for an initial fee of around £17million.
City, though, insist he will only do this if their asking price is met.
Milan are prepared to fork out £17m, but that would include add-ons and is close to what City chiefs are looking for.
Juventus have now emerged as a strong contender for his signature, with more talks due to take place with them today.