The Sporting star has been heavily linked with moves to United, Liverpool and Tottenham this summer.
But no club has so far wanted to meet the Portuguese side’s €100m (£90m) valuation of Fernandes.
The Red Devils remain in pole position to land the goalscoring midfielder.
And Fernandes was asked about his future earlier this week.
The 24-year-old admitted it was not his decision to make regarding a transfer – and hinted that a move to England might not materialise in the coming weeks.
“The president decides that, not me,” Fernandes said when asked about his future.
“I don’t care about the market, I’ve talked about this many times.
“The only thing I can do now is that I need to catch the plane so I don’t miss it.
“Will this be the last match for Sporting? I don’t know, it’s the coach who decides.
“I told you I liked to play in England, but that’s not what interests me.
“It may be when the club decides.”
Fernandes claims his future is up to Sporting president Frederico Varandas.
And the club chief has also spoken out about the possibility of selling the midfielder, admitting earlier this summer that the deal could be the biggest in Sporting’s history.
“It could be the most expensive sale of Sporting,” he told Radio Observer earlier this month.
“The most expensive so far was João Mário, for €40m (£36m).
“There have been only talks for Bruno Fernandes, for now.”
Fernandes’ arrival at Old Trafford would take United’s spending to almost £130m this summer.
Ole Gunnar Solskjaer also wants to improve his defence and has expressed an interest in Leicester defender Harry Maguire.
The Foxes want £80m for their star man, which has left United chiefs considering their options.
Maguire is keen for the move to materialise before next month’s August 8 transfer deadline.