The question of whether we should sell him remains irresepctive of his form/actual level and quality/where his head is/world cup etc.
Him, Dybala and Rugani are our only 'assets' that we have available to sell to get market returns and are coveted in the current market.
Purely from a balance sheet point of view that doesnt change if we like how he his performing, only impact being on the 'price'.