Moving this here so we don't get too offtopic in the Mbappe thread
Not really. Wirtz is an attacking midfielder through and through. Personally, I think this would make no sense from both a positional perspective as well as a performance oriented one. From what I've seen (and I've seen 50+ full games of both players), Wirtz is clearly better as an AM (the stats back that up as well by the way) while Bellingham has the unique trait of being a presence all over the pitch simultaneously due to his completeness (technique + physicality). Anyway, I think you signing Alonso will shake things up significantly one way or another. Especially his use of the wing back positions makes his formations incredibly flexible. Grimaldo as a LWB almost plays like a third CM while
Frimpong on the other wing is almost a RW. So you could play Valverde e. g. as a RWB who pushes into a CM role in possession and Vinicius as a "LWB" who actually plays like a LW. But you could also start Valverde in the current Palacios/Andrich role that gives the CM lots of freedom to roam, push into the box and leave the formation to press players based on instinct. I'd say you wouldn't find a better player for this position than Bellingham but if he absolutely has to play attacking mid, then he can do that besides Wirtz with Valverde and Tchouameni behind them.
But if you have the chance to sign Wirtz, you should (and will) be all over him. I mean, he's far and away the best player in a team that achieved the second highest points total in Bundesliga history and was the first to go unbeaten in a whole season. The teams that accomplished similar feats consisted of players such as Robben, Ribery, Lahm, Neuer, etc. I think it still hasn't really sunken in how fecking special he has been under Alonso.