Market value? A player is only worth what someone is willing to pay for them. We will obviously offer a fee at the lower end, just as the seller will ask for a fee at the top end. This is standard commerce, & when common sense prevails, we'll hopefully meet somewhere in the middle.
What you also need to consider is our budget in respect to FFP. There's a 3 year monitoring period, & we've spent very heavily in the last 2, so we can't go spunking huge amounts this summer window too.
There is also Napoli involved in this, & their owner is a notoriously difficult man to do business with. I fail to see how this is Txiki's fault. We can't make Napoli sell the player to us for what we're happy to pay, hence our transfer team are trying to factor in Zinchenko as a separate deal which will ease the overall financial burden on us.
Txiki has done well for City, BUT we can't go spending money we can't afford because of FFP. Our fans understanding in this respect would probably be appreciated by the club.