Bottom line is if Citeh want him he will cost double is market value. Manure wanted Bale and out bid Madrid, he still went to Madrid.
Walker and his agent have to tread a tightrope here, if he wants out then we all know Poch will simply say bye, give us your keycard and thank you for your efforts, can you please park in the other car park please. Players know they need to be onboard if not you are done, he will also know this as we have done it with many players already (all be it not in Walkers league) the rules are set, they are never broken or twisted or bent. I would also expect player pressure too, this is a tight group and maybe others will endorse this ethic. Walker's agent will also know that Spurs will resist selling to a direct rival, so Walker is looking at life in Europe. If Citeh want him he will be double his worth.
The deck is firmly in our favour.