Barcelona coach Ronald Koeman is pleased with their summer business so far.

On the four new signings, Koeman gave his opinion on Barca TV.

“(Sergio Aguero) is important, because we have to improve our performance up front and he's an experienced and dangerous player in the box. The important thing is that he's physically well and our objective is to keep him in the best shape."

Another new arrival is Memphis Depay.

“I know Memphis very well and he knows how I work. He's got a lot of character, physical attributes, speed, can play in different positions in attack. He's at a perfect age to show he can work here at Barca."

Eric Garcia is the main defensive reinforcement.

“He's had a great Euros. He comes here, despite his youth, with a lot of experience. He plays in the same position I did. With the ball he's very good and we can improve from the back with him."

Finally, Barca also brought in Emerson from Real Betis.

"He's one of the best full-backs in the league, he's been called up by Brazil despite all the competition. He'll bring us a lot physically and fits our way of playing."