When you look at it like that, it does sound crazy. However, one could argue that Pogba would be better next to Rice, who is more defensive-minded than McTominay.
Actually, McTominay got forward more than Pogba in the final, as Pogba was tasked with starting our build play. This is reflected by the number of passes that were made, with Pogba making 87 and McTominay making 58.
Oftentimes, when McTominay plays, he doesn't get involved in the build-up phase that much.
If we were to sign Rice, not only could it be beneficial for Pogba but McTominay, too.
You look at the role Soucek plays for West Ham next to Rice and I could see McTominay being a very similar player. I mean, you could argue that he already is.
Whilst I'd want more of a ball player, if we were to get Rice, we'd have more of a balanced midfielder, giving us the options of:
Rice (defensive)
Fred (defensive)
Pogba (box to box)
McTominay (box to box)
I actually think Fred should be box to box too but with Matic looking like his time at United could be coming to an end, that would potentially only leave Rice as our only defence-minded midfielder.