If we do play him, I think it's essential that it's through the center because he seems much more well suited to that role than the wings. Decent performance last night and if he can offer that in cup games and dead rubbers, that'll be important in itself. Not saying that he won't play important games like today but there's value in being available to refresh the starters.
It's also important to remember that Firmino and Minamino are also options. The interesting or perplexing thing is that all three, including Origi, are more suited for the central role than the wings. Perhaps Jota, Salah and Mane vie for the two wing spots and Firminio, Mina, Origi, and perhaps even Ox vie for the central spot?