He is irreplaceable, though. You totally missed the point of what PNP was saying, which ironically proved his point about other team's fans not understanding our unique position. Even if we got £50mill for him, like you did with Torres, we can't go and sign Aguero or Sneijder or another top player because we're not geared up financially for it and changing our wage structure to allow us to get these players would cost us most of the £50mill that it would cost us to replace him. Also, we have three highly desireable players in our squad, Modric, Bale & VDV, if we sell one of them we risk unsettling the rest and end up losing the top level players that make a big difference to our squad. Those three go and CL football will be a distant memory for us.
If you look at Blackburn, they sold Santa Cruz and Bentley in successive seasons and kept most of the revenue because it doesn't take as much to maintain there level in the Premier League and the difference between 10th and 15 is tiny compared to the money they held on to. We're not in that position and neither are we in Liverpool's position where we can throw nearly £60mill immediately at players on high wages and a further £80mill a few months later. In summary, we can't afford to replace him in one transfer window, like the rest of the top 6, yet we can't afford to sell him and other stars over the coming seasons and drop down the table - ergo we cannot afford to sell him.