I can understand Barcelona selling Tello. He's simply too direct for them much as Arjen Robbin would be. Every time he picks up the ball he runs straight at the opposition. He's very good at it but that's simply not how Barcelona play. Pedro, Affellay and even Villa are far more team oriented options better suited to Barcelona's style, not to mention brilliant players in their own right.
Said this yesterday, frighteningly fast and direct.
Not what Barca are about, but would scare the living daylights out of defenders over here, I'll be honest though, not seen enough of him to judge whether he's a one trick pony like Walcott, who if we're being honest, is only a bad hamstring tear away from being Championship quality.
For his pace, and direct style at such an early age though, he's got to be worth an 8m punt.