Chelsea have agreed terms with Paris St-Germain for defender David Luiz's return to Stamford Bridge for a fee of around £34m.
Luiz, 29, travelled to London for a medical as the Blues confirmed the signing of left-back Marcos Alonso from Fiorentina for a reported £23m.
Chelsea tweeted that they had reached agreement with PSG to re-sign Luiz two years after he left for Paris.
The deal is subject to Luiz agreeing personal terms and passing a medical.
Luiz joined French champions PSG on a five-year deal after appearing for Brazil at the 2014 World Cup.