Yes, it is a unique position. I think it sets him up well. Would you trust Odobert in midfield? Would you trust Tel in a hybrid '10' role? And no it does not mean dropping our top scorer, how are you concluding that? In the side below, the right would actualy be very very strong, providing again that Ange plans on not galavanting his FBs (which he hasn't in Europe). I think it'd also give Utd a lot to think about. Unless he is planning on starting Sarr to follow Bruno all over the pitch, I think it could work well.
Vicario
Spence
Romero
VdV
Udogie
Porro
Bentancur
Bissouma
Johnson
Solanke
Tel/Son
subs: Kinsky, Sarr, Moore, Richy, Odobert, Davies, (hopefully) Bergvall, Danso, Gray
p.s. if you recall, Poch actually ended up playing Rose in midfield a few times. It isn't as outlandish as you seem to think, and given the balance we need to find between being solid a la Europa form and finding some creative connection from front to back, it could be a move worth making.
I'd much rather have Sarr, Richy, and Odobert off the bench.
Still, it's all academic. We are fans and they are professionals who know the nuances vs the risks...it will be Sarr/Bents/Biss won't it?!!!!