Barcelona midfielder Sergio Busquets has described Javi Martinez as 'the lungs' of Bayern Munich.
The two teams face off against each other in the semi-final of the Champions League on Tuesday evening.
And the Blaugrana man has admitted that his Spanish counterpart will have an influence on the game.
“Javi Martínez has a spectacular physical potential,” he told the club's official website.
“He gets all around the pitch and wins possession back everywhere.
“He’s the lungs of the team and as many of his teammates and his Coach has said – he is the key piece which the team needed.
“It’s going to be a close game between two big teams who play great football.
“Bayern know what they are doing. They play a game which is easy on the eye for any fan and they have some great individuals.
“Any of their players can cause problems for you, and as a team too.”