With Ibrahimovic's loan deal coming to an end, Hulk could be the perfect replacement for the expensive Ibra. However the Swede was instrumental behind Milan's climb to the top and Milan would be keen to possibly permanently sign the frontman. Hulk has recently been pursued by the likes of Chelsea and Manchester City and in the end Porto will look to squeeze the highest price out of their superstar, who is still in contract with the club.
Porto will want to quell all rumours until they complete their campaign in the Europa league. The Portugese side are amongst the favourites to take out the title, and if so may want to hold on to Hulk for the Champions League.