Jose Mourinho is frustrated by the lack of progress at Manchester United over their transfer work.
The Manchester Evening News says United signed centre-back Eric Bailly from Villarreal earlier this month in a deal worth up to £30million and Mourinho is confident of making a statement signing, but Mourinho is unhappy Ed Woodward failed to clinch additional deals early.
Mourinho wants to sign at least four players in the summer transfer window.
United are interested in Real Madrid defender Raphael Varane, Juventus midfielder Paul Pogba, Borussia Dortmund playmaker Henrikh Mkhitaryan and striker Zlatan Ibrahimovic.