Chelsea have confirmed that former boss Guus Hiddink has been appointed as first-team manager for the rest of the season.
The appointment follows Thursday's sacking of Jose Mourinho, and sees the Dutchman return to Stamford Bridge for a second spell after taking charge as interim manager in 2009.
"I am excited to return to Stamford Bridge," he told the club's official website. "Chelsea is one of the biggest clubs in the world but is not where it should be at the moment. However, I am sure we can all turn this season around.
"I am looking forward to working with the players and staff at this great club and especially renewing my wonderful relationship with the Chelsea fans."
Hiddink lead the Blues to FA Cup victory in his previous spell at the club, losing just one league game as he guided them to a third-place finish.
The former Netherlands boss will now be expected to pull the reigning champions out of their ongoing malaise, which has them 16th in the Premier League after suffering nine defeats.
Hiddink will be at Stamford Bridge for Chelsea's Premier League clash with Sunderland on Saturday, but Steve Holland will take the helm against the Black Cats with the assistance of Eddie Newton.