The phrase "admitted to concerns" is correct and usable in written English.
It can be used when acknowledging or expressing awareness of specific worries or issues.
Example: "During the meeting, she admitted to concerns about the project's timeline and resource allocation."
Alternatives: "acknowledged worries" or "expressed concerns".
Villa lost that final to United and their manager, Martin O'Neill, admitted to concerns at playing there again.
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.
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.
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.
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.
This week, matters threatened to take an even more negative turn when Rory McIlroy admitted to concern over the Zika virus threat to Rio.
But he admitted to concern over unrest from World Cup sponsors that bankroll Fifa to the tune of $400m a year, and said meetings were planned with Visa, which has threatened to withdraw if there is no meaningful reform.
But he also admits to concerns.
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.
Wenger said he was calm at the gap between his side and the all-important Champions League-qualifying fourth place in the top flight with Wednesday's game against West Ham in hand, although he did admit to concerns over his team's form after two league defeats on the trot.
