The club lost 2-1 to Swansea City in the Dutchman's first Premier League match in charge of the side.
The manager also discussed new signing Marcos Rojo and rumours surrounding players leaving the team.
Read what Van Gaal said below:
3.17pmGood afternoon, Manchester United manager Louis van Gaal will speak to reporters in the next 15 minutes or so ahead of the team's Premier League match against Sunderland this weekend.
3.19pmThe Dutchman's first pre-match press conference last week was brief and to the point. His opening Premier League match in charge of the side ended in defeat to Swansea City, but Van Gaal will be hoping for a better result this time out.
3.21pmThe club are also due to unveil new signing Marcos Rojo this afternoon. The defender joined the club from Sporting Lisbon earlier this week, and could feature at the Stadium of Light on Sunday.
3.24pmSeveral players have been linked with moves away from Old Trafford before the end of the transfer window, so it will be interesting to hear which players Van Gaal says are unavailable for the trip.
3.28pmDon't forget, we'll have live coverage of the match on Sports Mole on Sunday afternoon, as well as team news, previews and plenty of build up beforehand.
3.30pmAfter this match, Man Utd have, on paper, a relatively kind run of matches. Their next three outings will be against the three newly-promoted sides, as well as a League Cup tie against MK Dons.
3.31pmVan Gaal is ready to begin his press conference...
3.32pmVan Gaal starts by addressing the fans' response to last week's defeat. He tells reporters: "Two weeks ago I was the king of Manchester. Now I am the devil. I was not hired to be fired, but to build up a team, and that is a process that needs time."
3.34pmVan Gaal turns his attention to new signings Marcos Rojo. He reveals that he was "enchanted" by the defender at the World Cup, while saying: "I think Marcos fits in the profile as a left central defender. Also a left wing-back."
3.37pmDanny Welbeck is among those that have been linked with the exit at Old Trafford. However, the manager insists that the reports are just guesswork: "I know what I said to Danny Welbeck and he knows exactly what I said. I think the media is guessing. I can imagine the fans are scared. They saw last year and the first home match. They have to believe."
3.39pmThe Old Trafford boss is asked about calls by some fans for the club to bring in more players, to which he responds: "The fans can think like that but it's not easy trying to buy and sell in the football market."
3.43pmVan Gaal turns hi attention back to speculation regarding players leaving the club. He reiterates: "I think the media is guessing, they were not in the room and I don't speak about that because that's private."
3.48pmOnce again, it's another brief but entertaining press conference from Van Gaal. The manager hasn't given any injury updates or squad news, so that will surely be still to come over the weekend. Man Utd were without nine players last weekend, but Van Gaal will be hoping to have at least some of those back.
3.51pmThat's all from Van Gaal this afternoon, but join us again on Sunday to find out if the manager can get his first Premier League win. Until then, thanks for joining me this afternoon, goodbye.