Former Netherlands boss Guus Hiddink has been appointed interim Chelsea manager until the end of the season following the sacking of Jose Mourinho.
The 69-year-old also managed the Blues on a temporary basis for the final three months of the 2008-09 campaign.
"I am excited to return," said the Dutchman. "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."
Mourinho was sacked on Thursday with champions Chelsea 16th in the Premier League table, one point above the relegation zone.