£20 million+ for Hernandez?
He'll go for £4-10 million, if he doesn't leave on a free after another loan move. He'll be 27-years-old by the time next season starts, and he'll have started fewer than 20 league games since summer 2013 (he'll be lucky to reach 15 the way things are going). Unless he changes what he wants, he's going to struggle to find a club. He thinks he's good enough to be starting for the best, but he's found himself warming the bench at both United and Madrid now.
I'm not convinced he's a 15-goal-a-season striker either. He's a luxury player for top sides, and he's great when he's got a few other attacking players doing all the build-up for him, whilst all he has to concentrate on is getting into the right place to score, but he's always struggled when he's been the main man up front. Given that it's unlikely a top side will take him on, the quality of service is going to decline if he moves. If he's willing to make the step down, he's going to struggle to find a starting place at any of the better clubs in the PL. Chelsea won't touch him, we won't sell to City or Liverpool, and I doubt he'd find himself in the starting 11 too often at Arsenal, Spurs, Everton or Southampton. Although I imagine he'd want CL football still, even if he's not at a club with a decent chance of winning the competition.
If he wants to start regularly and play CL football, he's suddenly looking at a move to somewhere like Turkey, Greece, Russia or Ukraine, or accepting that he'll be at a team that's chasing the final qualification spot in Spain, Italy, France or Germany.
I fully expect him to move, start most of the first 15 or so games but struggle for goals, then end up warming the bench anyway.