Van Gaal has said the summer signings will play a vital role in United’s PL title challenge next season.
Van gaal spent heavily in his first season at Old Trafford and hopes to bring in more talent, so as to build a title-winning side.
“The board of Manchester United shall say now we have to battle for the championship,” he told MUTV.
“It’s a fantastic challenge but that’s also dependable on how we can purchase very good players and how we can improve our balance in our selection.
“When you see last Sunday against Arsenal what I have to do to change I have to put players on other positions that I never play and that’s a pity because the balance in our play was not good.
“We need two players in every position and then they can perform more easily.
“The board has purchased me to win the title and my curriculum says that. Of course I want to win titles and I want to win it for the fans but also for myself.
“The biggest challenge is what your ambition is and my ambition is to give titles but it is not easy. We will fight till the end and I shall give everything in me to build a new champions team.”