Not personally, of course, but in his last interview he did express concern about the club regressing.There are assumptions in what I wrote, you're right, but his comments do suggest that he believes that his moment is now ripe. Opportunity is knocking, it's just a question of where.
But there are assumptions in your post too, as there are in everyone's.
For example: Other than that, he's not yet proved himself to be a good Championship manager. Again, people will see a mid table finish for us as par for the course.
I don't think that's true. United, financially speaking, are in a similar place to Wednesday under Mandy. I thought that Gray played a blinder to get the Owls to 13th (which is why he should never have been sacked), and that was by employing defensive tactics, not the type of football we've been treated to at the Lane. There aren't many managers out there who could achieve so much with that group of players. The Preston fixture summed it up for me. Both our teams played them within a short space of time, so obviously comparisons were easy. I think United probably played them better than Wednesday, but it was FF who undid them. I don't like him, I think his attitude stinks, but there's no doubting his ability. That's the type of quality required to fulfill Tufty's ambitions. No team plays well for 46 games a season, and it's players of FF's ilk who get you the three points nonetheless.
For what it's worth, I don't think he'll go to Weirside, but West Brom is a different kettle of fish altogether.