Madueke moved to Netherlands too early to count as CT or HG.
Edwards would count as CT.
I quite like CCV as a CB, although I wouldn't describe him as having the speed Ange seems to like - but he did well at Celtic under Ange seeming to be a massive leader and defender, so think he'd be an inspired choice but is naturally right footed although think he has played LCB before. Still only 26.
Dennis Cirkin (LB/LCB) would be another option and is CT - but has missed a lot of games for Sunderland this season with a hamstring, so would need a thorough medical. Thought to have a £6m buy back expiring this June.
Luis Binks (LCB) would be CT, but hasn't been as standout as I expected since he left in 2000 - currently on loan at Coventry - had fantastic Alderweireld long passing ability.
There's actually a few CT players, probably good enough to be squad players atm - for example Milos Veljkovic who has made over 200 appearances for Werder Bremer. Plays CB at club, DM for Serbia.
I'd hope our scouts have looked at all of them.