Thomas Tuchel says Chelsea will not make "excuses" despite severe restrictions placed on the club as a result of UK sanctions targeting Russian owner Roman Abramovich. The Premier League club are operating under a special licence after the British government last week froze the assets of Abramovich as part of a set of punitive measures following Russia's invasion of Ukraine. The licence is designed to prevent Chelsea and by extension billionaire Abramovich -- described by the government as part of Russian President Vladimir Putin's inner circle -- from generating new revenue.