Veteran defender David Luiz has signed a new one-year deal with Arsenal, the Premier League club announced on Wednesday.

The 33-year-old Brazil international joined the Gunners last year from Chelsea on an initial 12-month deal.

Manchester City’s Argentina striker Sergio Aguero will have knee surgery on Thursday and it was not clear when he will be fit again, manager Pep Guardiola said on Wednesday.

The club’s record goalscorer limped off with the injury in Monday’s 5-0 Premier League home win over Burnley.