United are simply offsetting the wages they will lose this summer on big nose and bog brush, so they can easily afford this deal.
What I now know for certain, £400k per week was offered by Chinese representatives last summer. Sanchez had no desire to play his football there.
What he and his agent did do, however, was use that figure as a benchmark when it also came to speaking to both Bayern and Paris.
Bayern were not prepared to even go anywhere near £300k per week and even Paris told them he would have to wait due to the Neymar and Mbappe deals.
United were told over Christmas by Sanchez that they had rejected £400k per week from elsewhere, and that he still only wanted to play for Pep.
United simply took a punt when they knew City were dragging heels over whether to do the deal in January, insisting they could match that offer from China/related fees.
Mourinho's recent comments telling his board he needed more money to compete with City was also with Sanchez in mind, he knew there was an outside chance.
I think he's done a selling job on the player since.
We are still waiting to sort the KDB deal, so I do think Kev's agent would have been emboldened to ask Sanchez money?