I agree with this as well but I'm not sure Kroenke would.
For us to lose Ozil for nothing and have him playing for us for a season, where he knows he is moving to a bigger club at the end of it, would be pointless.
We would be paying massive wages to a player who wants out, as well as wasting a season where we could have a replacement playing for us.
When we have sold our best players in previous seasons like RVP, Cesc, Nasri, Adebayor, Toure etc, for big money, the annoying thing was, not that we sold them but that we didn't replace them with players of a similar standard.
If we sell Ozil and Sanchez I have no problem, because they simply don't want to be here, and if we replace them with similar players, as well as some others, at least it it will be fairly exciting.
But if we sell them and buy cheaper, under whelming versions, and still no striker, then obviously that would be unacceptable.