I don't see Klentak making any moves until after next season.
Quinn as the 4th OF is your insurance policy, and Kingery would probably be a plus defensive OF if he played there on a regular basis. Altherr might rebound. So they'd have options.
Haseley should start next year in Lehigh, or if in Reading, be in Lehigh by June, Moniak will start in Reading.
and Pujols is probably 2 years away.
And after 2020 a certain CF might be available.
I don't see any FAs this year that would be a clear upgrade in CF.
I don't think effort is the issue, but I'm not sure Herrera is coachable either.
Some guys travel to the beat of a different drum, and resist change.
I'm sure they've tried to work with him for years, but I see no adjustments.
Sometimes a player has to fail to be more open to advice.