Midfielder Dele Alli could miss the rest of Tottenham’s season after being charged with violent conduct by the Football Association.
Television footage appeared to show Alli punching Claudio Yacob during his side’s draw with West Brom on Monday.
The incident was not in the referee’s report on the match, which ended 1-1.
Violent conduct usually incurs a three-game ban, so a guilty verdict would mean the England player, 20, misses all of Spurs’ remaining fixtures.
Alli, named as the Professional Footballers’ Association Young Player of the Year on Sunday, has until 18:00 BST on Wednesday, 27 April to respond.
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Tottenham manager Mauricio Pochettino said he had not seen the incident, which occurred in the 26th minute, but added: “Sometimes the opponents find him and try to provoke. They know he has a strong character and may react.”
Off-the-ball incidents missed by the officials are referred to a panel of three former elite referees to decide on any sanction.
Alli has been a hugely influential figure in his debut season for for Tottenham. The former MK Dons player has scored 10 goals so far and has formed an impressive partnership with striker Harry Kane.
Second-placed Spurs are seven points adrift of Leicester with three games remaining. The Foxes can win the title on Sunday with victory over Manchester United.