Good question.
I haven’t seen Vermeeren so can’t comment other than he’s played CL football so has more experience than the other 2.
Hackney might be just above Wharton for most and I think he’s older. I can’t put anything specific on it other than he runs like an Ange player and is the more attacking of the 2 BUT
for me Wharton is ahead of Hackney. Watched him a few times and he’s got England captain vibes. He’s the sort of kid that would have been on Fergies UTD radar back in the day.
None of the 3 look like bad options though if there was a chance to get a deal done
Wharton is obviously a talented player and a lot of desirable stuff when he is on the ball. There is just that ONE thing that concerns me. He is slow off the line. Not a good fit for Ange and also the main reason why someone like PEH has to go. This is probably not the era of Huddlestone.
Hackney would be my choice, despite him being a couple years older than Wharton, or at least I would make sure he had been scouted thoroughly. Unlike yesterday he usually operates in the 6/8 area, being the main outlet creating from deep. He has got a decent first touch and nice pass in his locker. The question I would have about him would be lung capacity, cos Middlesbrough do tend to have intervals where they comfortably hold their lines.
I have not watched a lot of Antwerp so I do not have a strong opinion about Vermeeren. All I can say is he has never stood out to me.
Whilst Wharton and Hackney are probably better ball players, I would still go for Gallagher if a deal could be done for around £35m. Maybe even £40m at a stretch. Just think he suits our style a lot better (but not as a 6)