Despite being linked with a host of big names, Moyes is still to make his first significant signing as United boss.
Now United are trying to force through a move for another Barca midfielder.
Having been given guidance that Cesc Fabregas is interested in joining former team-mate Robin van Persie at Old Trafford, Moyes revealed executive vice-chairman Ed Woodward has lodged a second bid for the former Arsenal captain.
Given Woodward returned home from Sydney on "urgent transfer business" on Thursday, United could do with Barcelona accepting so there is something tangible to show for the trip.
Moyes can certainly understand why supporters are getting agitated, although he feels there are extenuating circumstances which were always likely to make life difficult this summer.
"I can understand that feeling," he said. "But there have been quite a few changes. Other managers have changed their clubs too and everybody thought this might be the summer when transfers are done later in the month.
"That was always the thought I had when I came into the club. You have to remember I only started on July 1, so in truth I have only been in the job three weeks at this present time."