Obviously the loan offer from United is hilarious, and they're not a serious organisation.
However while at the start of the summer, I'd been of the "do not sell at all costs" stance, I think I'd probably now be in favour of selling if we can get 40m for him as our one 'big sale' that allows us to a) go and get someone like Chevalier who is 8 years younger and will probably have been poached by another UCL club this time next year, and b) free up some funds to make 2 starting XI-level additions to the team (e.g. a RB and winger).
The wage/SCR point to me is a bonus - I think there's a reasonable footballing case for saying that he's just had his worst season (both stats-wise and eye test-wise) with us; his value from here at 32 is probably not going to go up; and we have an opportunity to potentially secure our number 1 for the next 8-10 years if we move decisively this summer.