JERUSALEM — When Chelsea, the London soccer team, defeated Manchester United to win Britain’s FA Cup 10 days ago, the club’s billionaire Russian owner, Roman A. Abramovich, was nowhere to be seen among the celebrants, prompting speculation that the government was holding up his application for a visa extension.

On Monday, Mr. Abramovich finally surfaced — in Israel, where he apparently immigrated under the law of return, which guarantees citizenship to any Jew wanting to move here.

The British authorities have not publicly commented on Mr. Abramovich’s visa issues, but Prime Minister Theresa May has blamed Moscow for an attack on a former Russian spy and his daughter in England. She threatened to take action against wealthy Russians who benefit from their ties to President Vladimir V. Putin.

Russia has denied any involvement in the March attack on the retired spy, Sergei V. Skripal, and his daughter, Yulia Skripal. The two were poisoned in Salisbury, England, with the nerve agent Novichok, a chemical weapon developed by the Soviet Union in the 1970s and 1980s.