The future of the European champion is uncertain after sanctions were placed on the Russian owner.
The billionaire tried to sell the club but had his assets frozen by the UK government.
What does it mean for the team? The situation will affect those associated with the club.
The UK government responded to Russia's invasion of Ukraine by placing sanctions on Abramovich.
The government believes that the billionaire has a close relationship with Russia's president.
A special licence granted by the government allows the club to keep operating, even though it would have been frozen like the rest of his assets.
Yes.
The men's and women's teams are able to fulfill their fixtures for the rest of the season because of a special licence issued by the government.
The men and women of the Blues are both playing on the same day in the Women's Super League.
Match tickets sold before 10 March will be honoured, but season ticket holders will still be able to attend games.
Supporters can't buy new tickets to watch the game.
Tickets were due to go on sale for the FA Cup quarter-final tie at Middlesbrough on 19 March but a post on the club's official website on Thursday confirmed that would no longer happen as planned.
The club shop at the bridge is closing on Thursday, with the club unable to sell any merchandise.
Laura Scott is a sports reporter.
The licence says that anyone who purchased season tickets before today can continue to make their payments.
There was no mention of future seasons.
The wages of all employees, including players and coaching staff, can be paid by the government.
The licence is in place for the rest of the season and the Treasury has the right to change or suspend it at any time.
While the sanctions are in place, the transfer ban means that they are unable to buy or sell players.
They are unable to negotiate new contracts for the players they currently own, so that leaves an uncertain future for those who have their current deals expire in the summer.
That applies to Antonio Rudiger, Cesar Azpilicueta, and Andreas Christensen, although the latter two have been linked with a move to Barcelona.
Current developments leave the defender in a limbo situation, as he was believed to be close to a new deal.
Simon Stone is a reporter for the British Broadcasting Corporation.
Nobody has any idea how this will affect them yet.
No one is saying that they won't get paid. This is a time of change. Does it make the club more vulnerable to an approach from a rival team? Things are likely to change at the club.
Tuchel has not yet given his reaction to Thursday&s developments, although he will undoubtedly be asked about it afterwards, and so his situation may become clearer then.
Emma Sanders is a sports reporter for the British Broadcasting Corporation.
In July, she signed a long-term contract with the club and had her eye on a first European title.
She has won 10 major trophies during her time in charge of the club and has earned the respect of those high up.
At the end of last month, the exclusive list of trustees to whom Abramovich tried to give the stewardship of the club was released. Fans will be watching the situation cautiously because her commitment to the club has never been questioned.
Magowan is a reporter for the BBC Sport.
There are a lot of interested parties despite the fact that Abramovich has been fined.
The UK government is willing to consider a further addition to the special licence.
The people working on the deal were always told that the proceeds of the sale would go to victims of the war in Ukraine.
The club was put up for sale last week. It is understood that the loan will not be deducted from the price.
Finance experts believe that the price of the club could go down further given the current uncertainty around it.
It will take time to get assurances from the government that the club's proceeds won't go toAbramovich, so how quickly the club can be sold depends on that.
Laura Scott is a sports reporter.
Uefa is seeking further clarification on the matter before it comments further.
What Uefa is trying to establish is what will happen if the Blues fail to sell any tickets in the quarter-finals of the competition.
The quarter-finals of the men's cup will be shown live on BBC One.
They will play at Wembley in the semi-finals if they win that.
It's not clear how the restrictions would affect ticket sales for the FA Cup.
Laura Scott is a sports reporter.
The government has a limit on the number of teams that can travel for a match.
The club considers the cap to be too low to allow it to operate normally, and this is a pressing matter given next week the men's team travel to Lille.
The main shirt sponsors of the club suspended their deal hours after the announcement of the sanction.
Three was the official partner of the club since 2020.
It is not clear if any of the other sponsorship deals are at risk.
The club signed a kit deal with Nike. The club did not confirm any cash figures at the time, but it was said to be worth $60 million a season for the next 15 years.
In May of 2021, trivago was named as the club's official training wear partner.
There are a number of other official partners.