It can't be that Pep Guardiola hasn't made provision for a replacement of Rodri concerning what his team had to go through from struggling with winning games to losing their first place in the EPL to Liverpool. This new season Rodri absence would be of no consequence as am sure Pep must have tackled that using the transfer window to put his team together.
The injury came out of know where, it wasn't as if Pep was prepared for something like that to happen just after Rodri came back from injury few months ago. And you know how it is difficult to get a player who can fill up his roles consistently without flopping. You can get a DM in the EPL but he may not be as good and excellent as Rodri. Dont forget Rodri has the flexibility of a CM despite him being a DM. He offers so much to the team which cannot be easily replicated.
Alright, let assume Pep didn't have a plan peradventure that Rodri was going to be back to injury mode again as the season is about to begin, of which I doubt tho, but with the transfer window still open till next month he can make an unexpected signing that can fill the gap. It may not be a player that performs exactly as Rodri but he wouldn't make the mistake of signing someone that might flop. We know him for that in his choice of players.