Bentancur stooped to head a corner after seven minutes at the Tottenham Hotspur Stadium and stayed on the ground after falling unchallenged.
His team-mates showed immediate concern and play was stopped as Bentancur received medical attention for nine minutes before he was replaced by Brennan Johnson.
The 27-year-old was given oxygen through a mask during the treatment as a hush fell on the capacity crowd.
Tottenham moved to ease fears over Bentancur, who only recently returned from a seven-game ban for using a racial slur about team-mate Son Heung-min.
"We can confirm Rodrigo is conscious, talking and will go to hospital for further checks," the club said in a statement on X during the half-time interval.
