Manchester United manager David Moyes has indicated the club may not make any signings before the closure of the transfer window.

The Premier League champions have had bids for Cesc Fabregas, Marouane Fellaini and Leighton Baines rejected this summer, having only added young full back Guillermo Varela to the squad since the end of last season.

While Moyes has certain targets in mind, he will have no qualms in sticking with his current squad should those players remain unattainable before September 2.

"There is no pressure to do it," Moyes told a press conference when asked about the club's transfer activity. "I have an idea of where I'd like to strengthen. If the right players are available, then great, but there is a possibility nothing may happen."

Having also opted against making a formal bid for Thiago Alcantara before he sealed his move to Bayern Munich for Barcelona, United's reluctance to add to their midfield following the retirement of Paul Scholes this summer has been the source of frustration for some fans.

The club have not signed a central midfielder since Anderson and Owen Hargreaves arrived at the club in 2007, with concern over the lack of depth in quality available should Michael Carrick suffer an injury.

While United have been reserved during the transfer window, Chelsea have been one of the top four's most active teams following the return of Jose Mourinho, bringing four new players to the club with the arrival of Tottenham Hotspur target Willian now a real possibility after the Blues made last minute efforts to deter the Brazilian from making the move to White Hart Lane.

United welcome the Europa League holders to Old Trafford this Monday in what will be Moyes' first home game and his first test against a title challenger.

The Scot failed to beat Mourinho in his previous eight encounters against 'The Special One' during his days as Everton manager, but is relishing the chance to test himself once again.

"I came for this sort of level of game but I also came to win trophies," the United boss continued.

"To do that you have to beat the likes of Chelsea. It's first home game for us to have. They have started strongly, have good players and are a good team. There's no big change to the team - they just have a new manager, a bit like us."