ARSENAL will continue to keep a close eye on Alexis Sanchez ahead of our clash against Manchester United. "I like it as a centre-forward because I can get involved in the play more. I have the chance to drop deep a little bit more and that means I can link up with my team-mates more," Sanchez told Arsenal's official site ahead of the international break. "[The manager] is the one who decides, he's the one who changes things around and decides where we play. He asked me to play there so I said fine – I looked up some videos on the internet to see how I needed to adjust my movement and I've been adapting since then," the Chilean forward added.