Next year Debruyne will be 30 and Gundogan will be 31..
The only player who I think can play 3 times per week alongside Rodri in the midfield is -> Bernardo..
Bernardo plays his best football as a LCM - because he has three teammates upfront who he can pass and more space, more area to dribble, make those 360 degree turn arounds and etc.
Also he is the best player who you can turn to when you need to make a build-up and opponent is pressing. Debruyne often has problems in those tight areas but Bernardo 100 out of 100 times retains the ball and delivers.
So without no question - for Pep`s football he is the most important player in the midfield when you are playing against the tough opponents.
For this purpose he should always play as LCM and sometimes Foden can be rotated with him as well to gain some midfield experience and Debruyne / Gundogan should play as RCM and concentrate on the attack / goals / assists mainly..
This would be great I think, but Pep knows better..
I have a dream to see Debruyne - Bernardo midfield since he arrived here :D
But when Debruyne plays RCM and Bernardo LCM. PEP PLEASE :D