Portuguese reports claim the 22-year-old is desperate to leave Sporting Lisbon, and has heaped pressure on his side to accept a significantly lower fee.
The midfield enforcer has a £37m buyout clause, but with no firm offers being made throughout the entire summer - Lisbon chiefs are becoming increasingly aware they'll need to reconsider their valuation.
Carvalho said: "We all have ambitions and I hope one day to play in the best leagues in the world, the English or Spanish.
"It was not this year, but if I continue to do my job as I have done so, it will certainly come sooner or later."
GETTY
Marco Reus has his heart set on a move to Barcelona
I am thinking only of Benfica
Anderson Talisca
Borussia Dortmund's coveted midfielder Marco Reus is prepared to reject Premier League trio Manchester United, Chelsea and Manchester City to force through a deal to join Barcelona.
It had been claimed the German would join City for a deal in the region of £200,000 per-week, but Spanish reports claim otherwise.
Reus is willing to be patient with Barcelona and is prepared to wait for their transfer embargo to end in January 2016.
It is now the job of the English clubs to convince Reus that a switch to the Premier League would benefit him in the long run.
GETTY
Talisca has ruled-out a move to the Premier League in January
Chelsea are extremely unlikely to sign Brazilian wonderkid Anderson Talisca in January.
The 20-year-old midfielder claims his mind is focused solely on Benfica, diminishing his chances of making a switch in January.
He told Portuguese paper O'Jogo: "I am thinking only of Benfica.
"I'm ready, I know I have and am able to learn much from this wonderful group, with supporters and with the coach."
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