Chelsea have re-signed Brazil defender David Luiz from Paris St-Germain for a fee of around £34m.
The 29-year-old travelled to London for a medical as the Blues confirmed the signing of left-back Marcos Alonso from Fiorentina for a reported £23m.
Luiz returns to Stamford Bridge on a three-year deal.
He first joined the Blues from Benfica for £21.3m in January 2011, and made 143 appearances before leaving to join PSG for a reported £40m in 2014.
Capped 56 times for his country, Luiz won the Champions League and FA Cup with Chelsea in 2012, as well as the Europa League a year later.
“We had a fantastic story during my first time at the club,” said Luiz.