Tottenham have criticised three of their players for breaching coronavirus rules by attending a party over Christmas.
A picture on social media showed Argentina forward Erik Lamela, Spain defender Sergio Reguilon and Argentina midfielder Giovani lo Celso at a party.
"We are extremely disappointed," Tottenham said in a statement.
West Ham reminded Argentina forward Manuel Lanzini, who also attended, of his responsibilities.
Lanzini apologised in a tweet on Saturday, saying he made a "bad mistake".
"I take full responsibility for my actions," he said. "I know people have made difficult sacrifices to stay safe and I should be setting a better example.