Chelsea have sustained what could be a worrying injury blow ahead of the FIFA Club World Cup with Mason Mount having hobbled off with an injury against Plymouth Argyle.
The Blues midfielder started the clash against the League One outfit at Stamford Bridge only to be withdrawn in the 96th minute of the fourth-round tie with it having gone to extra-time.
He was eventually replaced by fellow midfielder Saul Niguez.
At the time of Mount's substitution, the scores were level after Macaulay Gillesphey and Cesar Azpilicueta had exchanged first-half strikes.
However, his withdrawal did not hamper Thomas Tuchel's men as they managed to finally edge ahead during the first-half of extra-time - Marcos Alonso finding the net.
Whilst the Blues will of course be delighted with victory and their resultant place in the fifth round of the FA Cup, the first immediate concern will be Mount's availabilty.
His absence could be a considerable blow to Chelsea with the current European champions set to fly to Abu Dhabi after the game for the Club World Cup.
The academy graduate has once again been a key player for the Blues so far this season with seven goals and seven assists in all competitions so far.
An extended lay-off would be another bitter pill for Chelsea to swallow having already lost manager Thomas Tuchel. The German has tested positive for Covid-19, and was absent against Plymouth.
He is also likely to miss the Blues' semi-final of the Club World Cup with quaratine guidelines keeping him in the UK until at least Wednesday.
