Manchester United executive vice-chairman Ed Woodward has said that the club still have more business to do during this summer's transfer window.
The team has already brought in defender Luke Shaw from Southampton and Spanish midfielder Ander Herrera, and have also been linked to Arturo Vidal, Daley Blind and Thomas Vermaelen.
Woodward told MUTV: "There is no fixed budget. Financially we are extremely strong, we have funds available.
"Louis [van Gaal] is the boss and is assessing what's going on but we have been in dialogue for some time about targets so there is a lot of work going on behind the scenes. We're continuing to move forward on some of those targets, so watch this space.
"I've experienced a lot of conversations with agents and players and we are still a huge attraction to top football stars around the world, there is no doubt about that."
Woodward also indicated that a number of players will leave the club before the start of the 2014-15 Premier League season.
Germany
Switzerland
Hungary
Scotland
Spain
Italy
Croatia
Albania
England
Denmark
Slovenia
Serbia
Austria
France
Netherlands
Poland
Romania
Belgium
Slovakia
Ukraine
Portugal
Turkey
Georgia
Czech Republic