Russian president Vladimir Putin's threat to invade Ukraine could end up seeing the Champions League final moved this season. German agency DPA were told by UEFA earlier this month that there are "currently no plans" to move from the current venue.
Amid the increasing security concern surrounding Russia's military presence on the border of Ukraine, several major European airlines have announced they are scaling back flights to the two countries.
Liverpool, Chelsea, Manchester United and Manchester City are all competing in the knockout stages.
Both Liverpool and City got their knockout campaign underway with wins over Inter Milan and Sporting Lisbon respectively.
Chelsea face off against Lille on Tuesday while Manchester United travel to Spain to face Atletico Madrid.
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The Champions League final is currently set to take place in St Petersburg (Image: GETTY)
Putin gave a televised address to explain his decision to recognise two areas of Ukraine as being controlled by Russian-backed separatists.
Putin's announcement prompted a response from UK Prime Minister Boris Johnson, who described the televised speech as "yet another indication that things are moving in the wrong direction in Ukraine".
He added: "[The UK will] continue to do everything we can to stand by the people of Ukraine."