My god, Chester
That Yugoslavia vs France was the only proven match where he played as a DM and not as a CB. Balu posted the lineup link in previous page and it was clear he played in middle of midfield 3 of a 2-3-5 formation, not even in the left. You yourself confirmed that it is better equated to a DM and not a CB role.
So why this vote?
I have already mused on this, Edgar.
I haven't seen the match against France – all I have seen are line-ups written after the fact, and they don't mean much to me based on several factors, the most important of which I have also mentioned:
A centre half in a W-M formation is not a player in “the middle of midfield” as you say – and in the sense you mean to imply here.
Furthermore, you know this very well – because we've had these debates before. You're well aware of the subtleties of the old designations – and you know as well as I do that a player who operated as a centre half (if that's what he did – this is all based on a bloody illustration) in that sense wasn't what we would call a central midfielder by any stretch: He was a third defender, primarily (that's why we usually number it out as 3-2-2-3), not a midfielder. The proper midfielders were the halves or wing halves or whatever the hell we decide to call them – they were the ones operating in roles that can be called, without question, “midfield” roles in modern parlance.
What you had in your W-M was a trio of defenders, a couple of central midfielders, two attacking midfielders slash second strikers, two wingers and a striker (CF).
That's the basic set-up. The role of the centre half varies, obviously, from situation to situation. Just like any role in any other formation (which is purely theoretical at the end of the day – as Chapman himself realized; players are capable of running around a bit, after all): But the main function of a CH in that sort of formation is clearly not that of a midfielder – but rather that of a defender. It's a 3-2-2-3. Not a 2-3-2-3.
Many great centre halves were good on the ball, good at passing, even good at bursting forward to contribute directly in the attacking phase – but they were still part of a basic three man line at the back.
If your argument is that our boy was a midfielder, based on those ridiculous illustrations, then you don't have an argument. A centre half, around 1960, was obviously not a midfielder in anything like the modern sense – he was a DM at best, but frequently a player whose tasks resembled that of a CB more than anything.