Chelsea have confirmed the signing of defender Papy Djilobodji from Nantes.
The Ligue 1 club announced his departure for Stamford Bridge earlier on Tuesday's transfer deadline day.
And the Premier League champions later confirmed the 26-year-old Senegal international defender's arrival on a four-year contract.
Djilobodji said on chelseafc.com: 'I'm very happy to sign for a big club like Chelsea and I want to do my best to help the team win titles. I want to thank the club for giving me this opportunity.'
Chelsea made their move for the 27-year-old after seeing their overtures for Everton's John Stones repeatedly rebuffed.
The Blues have conceded nine goals in four games in accruing four points to sit eight adrift of leaders Manchester City.
Djilobodji had one year remaining on his Nantes contract and his switch to Jose Mourinho's Chelsea was unexpected.
Reports in the French media on Monday said a deal of around three million euro (£2.2million) for Djilobodji. It is less than 10 per cent of the sum offered for Stones.
It has been reported other Premier League clubs rejected the opportunity to sign him, but now he is playing for the defending champions and in the Champions League.
Chelsea were roundly praised for their early purchases in summer 2014 of Diego Costa and Cesc Fabregas, but many supporters will be underwhelmed by this summer's transfer activity.
Rumoured interest in Paul Pogba of Juventus refuses to subside, but it would take an astronomical fee to land the Frenchman, and Chelsea will require a U-turn from Everton to return for Stones.
The Blues have signed goalkeeper Asmir Begovic, left-back Baba Rahman and striker Radamel Falcao on loan from Monaco - all like-for-like replacements for the departed Petr Cech, Filipe Luis and Didier Drogba.
Pedro was added from Barcelona and Victor Moses signed a four-year deal before joining the ranks of loan departures, making a season-long switch to West Ham.
Mourinho insisted Chelsea would not panic in the closing hours of the transfer window.
And Djilobodji may represent little more than a fall-back option as his pedigree is not quite at the standard Mourinho would wish for.
It may also indicate Chelsea are prepared to return for Stones in January or next summer.
Chelsea have 26 players out on loan after 33 departures in the summer window.
Chelsea also announced Izzy Brown, currently on loan for the season at Vitesse Arnhem in Holland, has signed a four-year contract.
The Ligue 1 club announced his departure for Stamford Bridge earlier on Tuesday's transfer deadline day.
And the Premier League champions later confirmed the 26-year-old Senegal international defender's arrival on a four-year contract.
Djilobodji said on chelseafc.com: 'I'm very happy to sign for a big club like Chelsea and I want to do my best to help the team win titles. I want to thank the club for giving me this opportunity.'
Chelsea made their move for the 27-year-old after seeing their overtures for Everton's John Stones repeatedly rebuffed.
The Blues have conceded nine goals in four games in accruing four points to sit eight adrift of leaders Manchester City.
Djilobodji had one year remaining on his Nantes contract and his switch to Jose Mourinho's Chelsea was unexpected.
Reports in the French media on Monday said a deal of around three million euro (£2.2million) for Djilobodji. It is less than 10 per cent of the sum offered for Stones.
It has been reported other Premier League clubs rejected the opportunity to sign him, but now he is playing for the defending champions and in the Champions League.
Chelsea were roundly praised for their early purchases in summer 2014 of Diego Costa and Cesc Fabregas, but many supporters will be underwhelmed by this summer's transfer activity.
Rumoured interest in Paul Pogba of Juventus refuses to subside, but it would take an astronomical fee to land the Frenchman, and Chelsea will require a U-turn from Everton to return for Stones.
The Blues have signed goalkeeper Asmir Begovic, left-back Baba Rahman and striker Radamel Falcao on loan from Monaco - all like-for-like replacements for the departed Petr Cech, Filipe Luis and Didier Drogba.
Pedro was added from Barcelona and Victor Moses signed a four-year deal before joining the ranks of loan departures, making a season-long switch to West Ham.
Mourinho insisted Chelsea would not panic in the closing hours of the transfer window.
And Djilobodji may represent little more than a fall-back option as his pedigree is not quite at the standard Mourinho would wish for.
It may also indicate Chelsea are prepared to return for Stones in January or next summer.
Chelsea have 26 players out on loan after 33 departures in the summer window.
Chelsea also announced Izzy Brown, currently on loan for the season at Vitesse Arnhem in Holland, has signed a four-year contract.
