Pep in January said in a press conference that the only reason he couldn't get thrown into the first team was because he didn't have expereince playing in front of proper crowds in high stakes games, unlike the youth players Pep had from Barcelona who played in the Spanish 3rd division.
So Maffeo goes off and gets (more) experience playing in high stakes games in a promotion race, does really well, and the response from Guardiola and co. is to sign Jesus Navas as our back up RB next year.
If the club isn't saying Maffeo's got no future here, then I imagine his agent soon will be because he's done exactly what was asked and they've blocked him off again.
This is all hypothetical and dealing with a lot of what-ifs. Here's what we know:
1. Pablo Maffeo, 19, is a City player under contract until summer 2019.
2. He is coming to the end of his loan period with Girona at the end of June.
3. Pep has stated all our young talent will be assessed and discussed further in the summer.
4. Sammy, a writer for goal.com, says Jesus Navas is getting a contract extension as squad depth, presumably at RB.
There are a number of potential outcomes for Maffeo:
1. He impresses in training and pre-season friendlies much as he did at Girona, the club keeps him and he becomes squad depth.
2. He shows talent but is still raw and Pep would prefer him having game time, particularly in La Liga, to work through it. He goes out on loan again.
If the latter is possible then surely the club has to have a contingency plan (Navas) available? And, if the former, then what has been lost by keeping Jesus who can also fill in on the wing as required?
Meanwhile, Maffeo is still only 19. Another year on loan isn't unthinkable and the club can find other ways to fuck him off if they really want to go down that route, as you suggest.