I dont watch the games in the stadiums but i can only remember a couple of times Sigurdsson has played centrally and he did ok simply because we were sitting deep and playing on the counter.
The stats may show he played centrally 6 times but whoscored do tend to get the positions wrong sometimes as well...
For me, I cant see any value in Sigurdsson playing deeper. Hes very good at pressing and scores goals but hes not a playmaker and I cant see him playing as a box to box 8.
My view is that if we played Richarlison or even a false 9 (
) as centre forward then we have a problem as they will come deep and into Sigurdssons area...so its not going to work imo as Sigurdsson I cant see able to switch positions with a CF.
I think the goals he brings are what keeps him in the side. However if we sign Neres (for example) and he, Richarlison and Bernard 'click' we may find that Sigurdsson is moved on in favour of another 8.
Just from the links it appears as though:
Sosa would be a sitting 6.
Gomes would play as an 8
Neres on the right
Then if we brought in another 6-8 (e.g Sangare) we could go 433.
I dont think it would happen overnight but i believe that we will gradually evolve into this over the season.
As for Sigurdsson, I feel the same as with Gana. Both are very strong in certain aspects of the game but have clear weaknesses which i feel doesnt make them suitable to play in a 433.
433 however would suit the other attacking players we expect to start and the players linked fqr better than our existing setup I feel...