The phrase "admit to concerns" is correct and usable in written English.
You can use it when someone acknowledges or confesses to having worries or issues about a particular situation.
Example: "During the meeting, she had to admit to concerns regarding the project's timeline and budget."
Alternatives: "acknowledge worries" or "confess to issues."
But he also admits to concerns.
Villa lost that final to United and their manager, Martin O'Neill, admitted to concerns at playing there again.
The Rajapaksa government attributes the furore in Tamil Nadu to coalition politics and electioneering, ahead of the general election due in India by next May.A senior presidential aide admits to concerns about the "rumblings" in Tamil Nadu.
He said he wanted men's tennis to be run more like men's golf, where the PGA controls the game, although he admitted to concerns about the impetuous nature of the world's far-flung tennis stars.
The International Olympic Committee has admitted to "concerns" over suspect payments from Tokyo's successful bid for the 2020 Games to a company linked to the son of the disgraced former world athletics chief Lamine Diack.
The 31-year-old De Villiers, who admitted to concerns over his workload during the first Test amid rumours of an impending retirement, said: "It is an incredible honour to captain South Africa in any format.
Rory McIlroy has admitted to concerns over the Zika virus's threat to the Olympic Games, conceding for the first time he may reconsider his participation in Rio this summer.
Motherwell manager Stuart McCall admitted to concerns over his side's injury list following their opening-day Premiership victory over St Mirren.
However, despite manager Ally McCoist having admitted to concerns about his playing budget for next season, former Scotland striker Kenny Miller has already secured his return to Ibrox.
Match-winner Laidlaw, who slotted over three of the four penalties that came his way, admitted to concerns about the atrocious conditions before his decisive kick.
