Following his side's 4-1 friendly defeat by Borussia Dortmund, Manchester United boss Jose Mourinho said that he is still looking for one more "crucial" signing.

"It would be much easier to have pre-season in North America or Europe. The decision to come here was based on the passion of the fans.

"We are completely convinced of our market. It has a fundamental part of four players. When we finish that fundamental market we are balanced.

"Then the market is open until 31 August. Sometimes things happen you are not expecting and you have to react. But the fundamental market is four players and we just need that crucial one."