Photo: New Chelsea signing sends heartfelt message to Diego Costa

David Luiz has a message for Chelsea's birthday boy

Parabens mano! Que Deus te abençoe muito! #mlkresenha

A photo posted by David Luiz (@davidluiz_4) on

David Luiz sent birthday wishes to Chelsea striker Diego Costa on Friday.

The Spain international turned 28 as Costa continues to enjoy his superb goal-scoring form for the west London side in the 2016-17 season so far.

Costa has found the back of the net in six of Chelsea’s seven Premier League games, including their second in a 2-0 win against Hull City at the KCOM Stadium.

Luiz and Costa have been club team-mates for just a month and seven days but the pair appear to have already struck up a close friendship at Stamford Bridge.

The Chelsea summer signing posted the above photo on his Instagram page and wrote the following caption:

“Congrats bro! God bless you too! #mlkresenha”

Luiz moved to Chelsea in a £32m deal from Ligue 1 champions Paris Saint-Germain on the final day of the summer transfer window.

The Brazilian centre-half moved to PSG from Chelsea in 2014 under Jose Mourinho after he was deemed surplus to requirements at Stamford Bridge.

MORE: The latest Chelsea news and views

MORE: The latest Chelsea player tweets

The Blues will host reigning champions Leicester City in their next Premier League game on Saturday 15 October.

Paul Merson
Paul Merson predicts the scoreline of Man United v Arsenal
Michael Owen
Michael Owen predicts outcome of Everton v Liverpool FC
Jadon Sancho
Jadon Sancho names Chelsea FC legends as his footballing idols
Paul Merson
Paul Merson predicts the scoreline of Everton v Liverpool FC
Paul Merson
Paul Merson states his prediction for Tottenham v Brentford
Paul Merson
Paul Merson predicts the scoreline of Man United v Arsenal
Michael Owen
Michael Owen predicts outcome of Everton v Liverpool FC
Jadon Sancho
Jadon Sancho names Chelsea FC legends as his footballing idols
Paul Merson
Paul Merson predicts the scoreline of Everton v Liverpool FC
Paul Merson
Paul Merson states his prediction for Tottenham v Brentford
Top 50 Muslim footballers: Arsenal, Chelsea FC, Liverpool FC and Man United stars feature
Top 50 Muslim footballers: Arsenal, Chelsea FC, Liverpool FC and Man United stars feature