Use the following highlights to write an article:

Manchester United have won last five games in a row. But Louis van Gaal has faced criticism from likes of Gary Neville. Van Gaal says people outside the club cannot know what is going on. Manchester United face Liverpool on Sunday at Old Trafford (1.30pm)

Article:
Louis van Gaal has told his Manchester United critics they don't know what they are taking about. United manager Van Gaal faces Liverpool at Old Trafford on Sunday on the back of a five-game winning run but has still faced criticism. Former United defender Gary Neville has said that Sunday's game will be like watching two pub teams while former assistant manager Mike Phelan has suggested Van Gaal's training methods must be responsible for the club's injuries. VIDEO Scroll down for Louis van Gaal: Comments from outside are based on no facts. Louis van Gaal has hit back at his Manchester United critics ahead of Sunday's visit of Liverpool. Van Gaal makes a point to assistant coach Marcel Bout as his team are put through their paces at Carrington. Van Gaal keeps an eye on his team as United look to extend their winning run to six consecutive games. But today Van Gaal said: 'I don't watch the English TV so I don't know what they say. 'But I don't think how somebody living outside the community of Manchester United can judge how we are doing. 'The criticism is based on no facts. I analyse everything but if this talk is based on no facts then I say "no".' Rooney leads the way over some hurdles as his team-mates, including the fit-again Phil Jones, look on. Michael Carrick, Darren Fletcher, Jonny Evans, Marouane Fellaini and Adnan Januzaj warm-up on Friday. Robin van Persie adjusts his belt during Manchester United training ahead of the game against Liverpool. United face Liverpool on Sunday with the club's great rivals mired in poor form. Van Gaal revealed that only four players - Daley Blind, Chris Smalling, Luke Shaw and Angel di Maria - remain injured and conceded that he is surprised by Liverpool's struggles. 'I thought they would do better but the Premier League is not easy,' he said. 'Liverpool have been a bit unlucky but they have to survive and manage that.'