He has been top notch from the right wing this season for Barcelona. IMO he had trouble adapting to playing out wide at Barcelona, but this season he has got it right. He scores, is constantly making runs behind the back 4, and is excellent on the ball.
Of course Sanchez shits all over Vela on the flank. However, if we are looking for a player with similar traits to Walcott on the cheap, to further our funds towards that monster striker, then Vela is a good choice with his buy back clause. Kami, Vela has done a lot of growing up in Spain. He is very different these days from the player who left us.