Hmm. That's rags propaganda. Sanchez was the best player on the pitch by some distance orchestrating Arsenal'ss best moves. However he is not 24, he's 28 and his physicality is such a huge part of his game. He used to be seriously quick and relied a lot on his pace. He doesn't seem as quick as he was when he was at Udinese and then Barcelona. Now he is more of an all-round player with a lot of quality and vision. He is a top player - one of the best in the Premiership, and will be for 1-2 more seasons, but as a wide forward we have Sane, Sterling and Roberts. I would persist with these players. I feel that Sanchez would be a very short term buy like RVP was for Utd and his game is now dipping whereas we have players in that position who are going to get better.
I thought he created most of Arsenals best moves of the game.
Also RE: pace, I think he's looking a little bulkier than he used to. Still in great shape obviously but I Reckon he'd drop a few pounds and maybe sharpen up under the Guardiola preseason regime.