Zinchenko might go on loan. Sané isn't a forgone conclusion yet either. Nolito is a winger, but he isn't quick. Nolito could play on the wing, but also play more centrally and back up to De Bruyne in the Muller role in certain games. Pep will rotate players and De Bruyne and even Aguero will sit out some games especially since we have a lot of cup competitions. At Bayern he had 4 wingers and they rotated the most. Robben, Ribery, Costa and Coman and yes there were injuries, but still Pep like to rotate his wingers like Pellers did our fullbacks. We never know what will happen, but Pep does the unconventional.
Nolito will never play centrally. He's had a decade long career as a winger. If pep wanted a central player he would have just bought one.
Zinchenko and his agent have both said they aren't going on loan.
Aguero and De Bruyne are unlikely to sit out games if they stay fit, in the same way both Lewandowksi and Müller played 50 games last season.
And Bayern only had 4 wingers for about 3 weeks of the season. It wasn't that there were some injuries, Ribery and Robben were out for 90% of the season.
Pep does occasionally break the mould but he doesn't do things like sell a RB to bring in a sixth winger.
Instead of trying to come up with the most bizarre way pep could possibly act, let's just assume he's selling a right back and then buying a right back to play right back.