Can't see that happening. Money is no issue for us now, it'll take a substantial amount to sign him purely so we can negotiate FFP and the deal will have to be done early because Koeman has a plan for this summer and isn't going to let late deals for players leaving jeopardise that. Either he goes soon after the Euros or I can't see him going at all.
If it was between keeping him and Lukaku, I would keep him.
That's how good he is. Three games away from Martinez and he was back living up to the unprecedented hype put on him by the media, putthing in his best ever performance for England, doing what he does best: distributing from the back. England have missed him so much; Cahill is no better defensively and isn't anywhere near as accomplished with the ball, and this is why England haven't scored. Hodgson is a dinosaur and the sooner he gets sacked the better for England. Stones will come in and England will realise what they've been missing.
The media have built him up and chopped him down brutally. Alli has been utterly abysmal (based on his performances no sane person would purchase him for five pounds, let alone the five million Spurs spent) and Dier scored a dreadful own-goal in that friendly, but neither received any hate from the media at all in comparison to Stones. It attracts reads, so they'll do it.