James Milner has been a solid squad player for both City and Liverpool for the last 12 years. Every squad competing for trophies needs players who wouldn’t necessarily ever be an automatic pick for the starting 11 in a big game but who could slot in and not let you down in those games if called upon and who can still start 20+ games a season in all competitions.
In the Guardiola City era see Zinchenko, Ake, Jesus for reference. You don’t win the league without a few of these kind of players in the squad.
Key thing is Rodri has progressed to the stage where he’s now the best defensive midfielder in the premier league. Hes first choice DM for us without any doubt. We are buying cover for him, not buying somebody else at his level.