Lionel Messi has officially signed a contract extension with Barcelona through to the summer of 2021.

The deal was agreed upon in July but several months went by where Messi's status with Barcelona was uncertain. There was increasing speculation that Messi could leave the club with Manchester City the most probable destination.

Messi's deal has a £626 million ($835 million) release clause.

Messi will be turning 34 when this contract expires.