Yeah I don't think its too hard to get there. Still some tough choices yes, but not too hard to rationalize imo.
I think Pep just wants about 3 or 4 less players, that's it, to balance the 4 that came in.
He was happy with the squad size at the beginning of the season, he isn't going to pad the squad just in case 7 or 8 players get injured, that has never happened to Pep before. I think he will just trust youth more like he said.
4 players coming in (2 mid, 1 RB, 1 LB, goalie change is like for like) means about 7 or 8 need to go.
And it's not hard to get to 6 at the very least:
Kevin
Grealish
McAtee
1 of Gundogan/Kova/Bernie (likely Gundogan imo)
2 of Stones, Akanji, Ake (likely Stones and maybe 1 more, this is where it gets trickier)
That's 6 gone right there.