Sanchez is not going to turn it on this season for Arsenal for whatever reason so they should sell. They must finish strongly to get back in the top 4. Logically they should gamble in this window to change a season that is heading one way towards a very expensive team-rebuilding period, if Kroenke is willing to do that, or a big write-down in his asset. However would you trust Arsenal to act in their best self-interest? I wouldn't, and their fans do not.