Manchester United star Bruno Fernandes insisted he does not need to be rested after coming off the bench to secure FA Cup victory over rivals Liverpool.

Fernandes was among the substitutes in Sunday's 3-2 FA Cup fourth-round triumph at Old Trafford, where he was introduced in the second half and scored the match-winning 78th-minute free-kick.

The Portugal international has now scored 28 goals for United in all competitions since his debut in February 2020 – more than any other player for a Premier League club.

Fernandes has helped rejuvenate United, who have gone from struggling to qualify for the Champions League to topping the Premier League table through 19 matches in 2020-21.

But Fernandes dismissed claims he is tired, saying: "Tired? With 26 years old I can't be tired. If I'm tired now, when I arrive at 30, 32, I will not play.

"I will play one game in five [days] so, no, I'm not tired."

Fernandes, who dropped out of the starting line-up for Donny van de Beek against Liverpool, added: "Of course the coach knows what is better for the team and he chose to play with Donny to give some freshness to the team.

"I think it's fair enough because Donny is training really well, he's been important for us and will be more and more important in the future."

Former Sporting CP captain Fernandes is determined to lead United to silverware, following three semi-final appearances last season in the Europa League, FA Cup and EFL Cup.

Ole Gunnar Solskjaer's United, who last won the Premier League in 2012-13, also lost in the semi-finals of this season's EFL Cup.

"I don't conform with [the idea that] losing games is normal stuff," said Fernandes. "For me, losing is not normal so my mentality comes from that, you know? I always was like this. I don’t like to lose, so maybe the mentality is more like I don't like to lose.

"Also playing whatever it is, when I was playing with my friends, my brother, my neighbours, I never wanted to lose, I want to win every time. This mentality will be with me for the rest of my life, I think."

United – two points clear of neighbours Manchester City, who have a game in hand – face Sheffield United on Wednesday, are through to the FA Cup fifth round and will meet Real Sociedad in the Europa League last 32.

Fernandes said: "I came to the club because I knew this is a club who wants to win everything. So you have to be confident, you have to trust your team-mates, you have to trust yourself, and you have to believe.

"And I will believe until it's not possible. Like when I see someone get the trophy before me [only] then I will [have] lost my belief."