Hulk – real name Givanildo Vieira de Souza – shot Villas-Boas’ Porto side to the League, Cup and Europa League treble last season.
The 25-year-old marksman, who has a staggering £84million buyout clause, last night admitted he could be up for a move to west London.
Hulk said: “We never know what is going to happen tomorrow.
“I have four-and-a-half years left on my Porto contract but, as I have always said, if some day something good for me and for the club appears, I think there will not be any problem and a deal will be reached.
“As long as it is amicable and good for everyone, I believe it will be concluded without any problem. If I do not leave, then that is fine.”