I think its pretty simple situation.
If Sterling asks for significant wage increase, hes gone and replaced with Grealish on wages less than Sterling is earning now.
City are in bad position regards to wage bill, its very close to getting out of control as our wages are growing much faster than revenue is.
Something has to give to stabilise the wage bill, its just cant keep on increasing £20-£30m a year like it is been since Pep arrived.
Pellegrinis final season our wages were £198M, now £351M and will be even higher this season with PL bonuses + KDB and Guardiola extensions.
It just cant keep going on like that or otherwise we will be begging for Mansour to prop up the club again like its 2010.