Manchester United legend Gary Neville has questioned the club’s transfer policy amid their interest in Jadon Sancho and Thiago Alcantara.
The Red Devils were expected to snap up Borussia Dortmund star Jadon Sancho this summer, but their pursuit seems to have dwindled in recent weeks.
Meanwhile, United have joined Liverpool in the race for Bayern Munich midfielder Thiago, who is reportedly available for just £30m.
Ole Gunnar Solskjaer was expected to make several additions this summer, but is yet to confirm any arrivals.
And ex-United captain Neville says he is getting increasingly frustrated with the lack of business being done at Old Trafford.
He told Sky Sports: "It's frustrating at the moment, as a United fan, that the club haven't done their business earlier.
"But there have been times where the club have panicked in the transfer market in the last 10 years, where they've been reactive, where they've overpaid and where they've got it wrong.
"So, you have to be sensible. If the deals aren't there to do, you don't do them, but there's definitely that tension building, particularly on social media.
"Why has Jadon Sancho not signed? Why have we not got Thiago Alcantara?
"Why haven't we got whoever it might be that's gone to another club?"
Neville went on to reveal how many signings he thinks United need to ensure they don’t get left behind by their rivals.
"I think there are definitely four or five players required and to not get three,” he added. “I think it would be a problem because of what the other clubs are doing.
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"If Liverpool get Thiago, if Manchester City do what they are looking like they are going to do and with Chelsea doing what they've done, they are your competitors and they all look like they are improving and moving forward.
"So, United have to do business but I do believe more in the strategy of what's happening, they just have to get the deals over the line.
"That's not always easy but they have to try and do it quickly to give Ole the time to build to get this team moulded for the start of the season."