This is one of the great threads of our age. After much tactical thoughts - here is my 2 Euros worth
Personally I'd see King Leopold II as more of a midfield enforcer in a diamond formation and I'd like to see Poirot using his little grey cells as the manager.
I'd stick Magritte in goal - they're always a bit surreal and put Van Damme up front with Benteke. You'd need plenty of crosses with these strikers.
I'd use full backs with "good engines" to get box to box and provide the crosses - Boonen as left back and move Merckx to right back.
If I were to be really critical I'd replace Tin Tin as centre back with Vincent Kompany and Captain Haddock with Plastic Betrand, given they don't exist.
Magritte
Merckx Kompany Plastic Bertrand Boonen
Fellaini King Leopold II Hazard
Dembele
Benteke Van Damme
Manager : Poirot