Yeah his ball control isn't the best, but the thing is with Kalou is his composure, i think he's got good technique in skills myself, but he doesn't have the mentallity to take it all on, that's why he will never get better and he will only be the same player he is, so yes he is quite useless. But Kalou can make a good pass a crucial one, then make a great run with the striker, the striker passes back to him, then he will do something stupid like kick it at the corner flag with no aim or give the ball away, that's just an example of how much stuff he mucks up. It's a shame really.