Chelsea are set to play any remaining home Champions League fixtures behind closed doors after owner Roman Abramovich was sanctioned by the EU, The Athletic understands.
On Tuesday, the EU added Abramovich to its updated list of individuals facing an asset freeze and travel bans over their role in the Russian invasion of Ukraine.
Abramovich was sanctioned by the UK government last week.
UEFA have said that they “will work with the EU and relevant member states to ensure we have full clarity and remain in lockstep with all relevant and applicable measures.”
The reigning European champions play the second-leg of their round of 16 tie against Lille in France on Wednesday evening, protecting a two-goal lead.
If they progress to the quarter-finals, they will not be allowed to have fans present at Stamford Bridge.
While season-ticket holders are allowed to attend domestic matches under the terms of the government license, European tickets are not included in that deal.
Chelsea are not allowed to sell tickets in order to generate revenue.
On Tuesday afternoon, Chelsea complained to the FA that playing without away fans in the FA Cup threatened “sporting integrity”, an appeal which was withdrawn hours later.
A UEFA statement said: “UEFA is fully committed to always implementing relevant EU and international sanctions. Our understanding is that the present case is assessed in the context of the license issued in the UK, which allows Chelsea FC to continue minimum football activity while providing a safeguard that no financial gain will result for Mr Abramovich.
“We will work with the EU and relevant member states to ensure we have full clarity and remain in lockstep with all relevant and applicable measures in line with latest developments.
“UEFA will keep on working closely with, and support, the players, staff and fans of Chelsea during these difficult times to allow them to represent their colours on the pitch.”