They've steamrolled past top-four rivals Tottenham, Liverpool and Manchester City in their current six-game Premier League winning streak, and Manchester United are looking to make it seventh heaven when they travel to table-toppers Chelsea on Saturday. Ahead of the blockbuster clash at Stamford Bridge, the United squad were pictured travelling down to London on Friday afternoon. Led by captain Wayne Rooney the Red Devils' contingent commuted via Stockport Railway Station to the English capital. Wayne Rooney (left) and Ashley Young were among the Manchester United stars who made the trip to London via train on Friday ahead of this weekend's Premier League clash at Chelsea . Radamel Falcao (left) or Robin van Persie (right) could start up front for United vs Chelsea on Saturday . United boss Louis van Gaal  faces a number of selection dilemmas ahead of their clash against the Blues . It was earlier revealed that the 29-year-old striker may have to revert to a midfield role against the Blues after Michael Carrick and Daley Blind were two of four  United players ruled out of the clash due to injury. However, Van Gaal is able to call upon the services of in-form midfielder Juan Mata who is returning to the home of his former club for the first time on Saturday. Mata, who won three trophies in two-and-a-half successful seasons at the Bridge, posted a picture via his Instagram account as the United players boarded the train on Friday afternoon. Accompanied with the caption: 'I got back to London a few times, but this one it's different... Big game, lots of memories, great day of football!... #CFC vs #MUFC' United's No 8 was all smiles as he gears up for what promises to be emotional return to west London. Alongside the injuries of Carrick and Blind, United duo Phil Jones and Marcos Rojo were also absent from the train ride - with the quartet all suffering injuries following United's 4-2 win over bitter rivals Manchester City on April 12. The club's injury setback means that Luke Shaw and Radamel Falcao could both be recalled against Jose Mourinho’s side. And the latter was all smiles alongside Victor Valdes as they travelled down to London on Friday. Falcao is one of several selection dilemmas that Van Gaal and assistant boss Ryan Giggs have to make for the trip against Chelsea; in what the Dutchman described  as ‘the worst scenario’. Michael Carrick (left) limped off against Manchester City while Marcos Rojo picked up an injury soon after . Van Gaal also revealed in his pre-match press conference that Daley Blind (left) and Phil Jones are out . Rooney (right) has impressed up front in recent weeks but may have to drop further back into midfield . Van Gaal (left) puts his arm round Manchester United captain Wayne Rooney during training this week . Van Gaal (left) has revealed that Rooney may play in holding midfield role against Chelsea . 4-1-4-1: De Gea; Valencia, Smalling, Blackett, Shaw; Rooney; Mata, Herrera, Fellaini, Young; Falcao . ‘I have to tell that we have four injuries who played the last match so that’s not so good for us,’ said Van Gaal. ‘We had very good hope that we should recover two of the four but it’s not like that. Carrick is out and Rojo is out, but also Blind and Jones,' the 63-year-old said at United's pre-match press conference on Friday. ‘That’s the worst scenario because Rojo and Jones are good players at the left central defender position. Evans is suspended so we don’t have many choices. Blind and Carrick could play the midfield holding position and I don’t have any other option, or I have to play Wayne Rooney in that position again. I have to puzzle a lot for tomorrow. ‘Other players can take profit of the momentum now. It’s always like that. It’s not special in the life of a manager or a team. ‘You have seen that I took Jones off pitch (against Manchester City) because of injury, you have seen that Carrick was off the pitch, you have seen the tackle of Kompany against Blind. Only Rojo is a little bit surprising because he felt it the day after the match. ‘It’s because of the distance between the matches. Blind and Jones were very close to playing but it was not enough. ‘Other players can take profit of the moment now. It’s always like that. It’s not special in the life of a manager or a team.’ Van Gaal addresses the media ahead of Man United's crucial Premier League clash with Chelsea on Saturday . Luke Shaw hasn't featured under Van Gaal recently but should return to play at left back . Mata (right) is closed down by his Man United team-mates during a training session on Friday . Maroaune Fellaini will be hoping to continue his impressive form against Chelsea on Saturday evening . Fellaini (centre right) is embraced by his team-mates after scoring against rivals Manchester City last week . Sports analysts BSports predict that a Chelsea win is easily the most likely outcome at Stamford Bridge . Asked if Shaw could return for the first time since being substituted in the FA Cup defeat to Arsenal last month amid concerns over his fitness, Van Gaal replied: ‘Maybe you shall see tomorrow [Saturday]. You never know. Luke is fit enough I think. He has already had more than four or five weeks with no match and I don’t like that. But we train and I think he is fit enough.’ With Chelsea holding an eight-point lead and a game in hand over third-placed United, Van Gaal believes it is asking too much for his team to win the title. He also claimed that Mourinho will be happy with a draw. ‘It’s still possible, I’ve said that before,’ he added. ‘It is not logical but it is possible. It’s more when and if, and I don’t believe in when and if. I believe in facts. The fact is that we are behind Chelsea. ‘But, alright, we have to play against them and so do Arsenal so we can lay pressure on Chelsea’s shoulders. You never know, you’ve seen it in previous Premier League seasons. So I cannot say it is not possible, but it is not logical. ‘They play at home but I think that Chelsea will be satisfied with a draw. Of course they will want to beat Manchester United and we want to beat them, the question is how long players can play in the discipline. Robin van Persie (back right) has only been training with United for a week but may return to feature . ‘We live for these titles, we are doing this for that. The only satisfaction you have as a manager is when you win a title. When you are second or third you can play Champions League, but a title is more fixed for you and you have your name on it. That’s why managers are fixated on titles. When you reach that goal you are happy. ‘To be involved in the game with young people to reach a goal, that is also a goal of mine. That is why I’m still a manager because I don’t have to work anymore – you can count on that. I like to work with young people and help them in their career.’ Van Gaal gave a young Mourinho his break in coaching at Barcelona. Asked to compare the Portuguese with his current assistant Ryan Giggs, the United boss admitted that he has been surprised by the Old Trafford legend’s work ethic. He said: ‘It’s always difficult. People compare with each other because Jose Mourinho was not the world-class player that Ryan Giggs was. So that’s the same thing with me. I was not as world-class as, for example, Johann Cruyff yet our ambition is maybe then higher. ‘But I have to admit that I could not imagine when I spoke with him (Giggs) in May or June to ask him to be my assistant manager and we spoke about how we saw it, that he works very hard. As an ex-player you are not used to working very hard and he is a very hard worker, and he reads the game very well like Jose. But to manage a group you have to work, and what I can see is that he’s learning quickly.’ Chris Smalling celebrates after netting the fourth goal in the comprehensive victory at Old Trafford .
Manchester United travel to Chelsea in the Premier League on Saturday .
Red Devils squad head down to London on Friday ahead of showdown .
United have won six straight games prior to their meeting with the Blues .
But Louis van Gaal will travel to Stamford Bridge without several key men .
Phil Jones, Marcos Rojo, Michael Carrick and Daley Blind are all sidelined .
United captain Wayne Rooney may have to revert back to holding midfield .