Liverpool target Naby Keita was rushed to hospital on Saturday after collapsing on the pitch during his club RB Leipzig’s 1-0 defeat to Wolfsburg.
The 22-year-old was observed overnight after dropping to the turf at the Red Bull arena with no one around him.
The midfielder was booked earlier in the game and played the full 90 minutes in the defeat to Andries Jonker’s side.
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Keita is said to have suffered circulatory problems but there has been no official comment from the club. Reports in Germany claim Keita is now conscious following the incident.
The Guinea-born midfielder has been linked with a move to Anfield this summer after impressing for the Bundesliga side as they made a surprise assault on the league title.
Liverpool are not the only club interested in his services, with Bayern Munich, Borussia Dortmund, Atletico Madrid and Arsenal all keeping tabs on the energetic Keita, who signing for RB Leipzig from sister club Red Bull Salzburg in June 2016.
Leipzig are 10 points behind leaders Bayern Munich but led the way in the Bundesliga for much of the start of the season.