Manchester United have moved closer to signing midfield sensation Renato Sanches after further talks in London on Friday.

The 18-year-old Benfica ace has a buy-out clause of nearly £60million but United are negotiating hard. It is the second time they have met officials of the Lisbon club, after watching Sanches in three of his last four games.

Benfica have put a high price on the teenager but are expected to sell for around half that £60m sum, with add-ons.

Manchester United are looking to sign Renato Sanches (centre left) during the January transfer window

Sanches (right) has been valued at £60million by Benfica but United are attempting to negotiate a deal

The 18-year-old Benfica teenager has scored two goals in 13 appearances for the Portuguese side this season

United were originally looking at Sanches' Benfica team-mates Goncalo Guedes (left) and Eliseu (right)

SO WHO IS RENATO SANCHES? Renato Sanches has 40 international caps to his name at youth level but is yet to make a senior appearance for Portugal's national team. After impressing for Benfica B, Sanches was promoted to the first-team set up at the start of this season. Sanches signed a contract which will see him stay at Benfica until 2021 unless his buyout clause is met. He has been compared to Edgar Davids due to his hairstyle and creativity in midfield. Advertisement

It would still represent a significant outlay for United, following the signing of Anthony Martial, 20, in a deal that could cost £58m. At a recruitment meeting of United’s top scouts last week, the decision was made to move now for Sanches rather than wait until the summer.

Other heavyweight European clubs have been watching him and United do not want an auction to start.

Sanches is an attacking midfielder who can play down the middle or out wide. He could be loaned back to Benfica for the rest of this season but would be an exciting signing, having broken into the team at Estadio da Luz this season.

United scouts were originally watching winger Goncalo Guedes and veteran full back Eliseu, but soon realised Sanches was the player for them.

Manager Louis van Gaal is encouraging his United players to fight among themselves after confirming that a half-time shouting match led to last weekend’s victory at Liverpool.

Captain Wayne Rooney was at the centre of a frank exchange that could even be heard in the Liverpool dressing-room before he went out to score United’s winner at Anfield. Having accused his players of ‘protecting’ their team-mates too much earlier this month, Van Gaal admitted he is happy to stand back and let them criticise one another.

Manchester United may have to pay up to £58m for Anthony Martial (left) following his move from Monaco

Wayne Rooney was among several players who were unhappy with his side's first-half display at Liverpool

‘I invited it!’ said the United boss. ‘It is good. Players have to take responsibility, but at the right moment.

‘Not only Wayne Rooney was doing that, several players were doing it and that’s what I want. The players are self-responsible, not only the manager. It’s a little bit crazy that I said this in a press conference and then it happened at half-time.

'But I’ve already been asking for this for more than a year. I have seen it in my career also at the wrong moment, but at the right moment you have to do it. In the 1995 Champions League final Frank Rijkaard and my captain Danny Blind got involved, for example.’

Louis van Gaal has revealed his captain was not the only player to vent their frustration at Anfield