His illness casts doubt over what part he might be able to play in the monthlong tournament in the United States, with Madrid facing Pachuca in Charlotte, N.C., on Sunday.

Real Madrid says forward Kylian Mbappe has been hospitalized with an acute case of gastroenteritis. World Cup winner Mbappe missed Madrid’s opening game at the Club World Cup against Saudi Arabian team Al Hilal in Miami on Wednesday because of a fever.

Real Madrid have already made three summer signings in Dean Huijsen, Trent Alexander-Arnold and Franco Mastantuono, but more are expected to arrive after the Club World Cup concludes in July. Alvaro