So after the end of the last transfer window of his contract would like to make a long post about the guy
RF joined in summer 2015 after election, that mean he had 3 summer transfer windows + 3 winter windows (w of them who we rightfully didn't really use)
In 2015 we had the ban and already made our signings b4 he joined, Pedro was signed to contract extension (along Alves) so there weren't much to do in that summer. Only thing was Pedro who had 30M buyout and tried to decrease it when Chelsea came but he refused to accept anything less.
I think after (or may be before) the double season he wanted to renew the team, first with replacing those older players who were in their 30's (born b4 87)
In 2016 we didn't bother to argue Alves to stay, allowed Bravo to leave and brought in Umtiti to be Pique future partner and replaced Adriano with Digne. Tried to get Dembele for attack to get someone who has a chance in being future starter and added Gomes & Denis to be next starter in midfield.
I think our bench under him was somewhat underrated, people had a bit unrealistic hopes for some. Gomes was his biggest failure IMO and if he lived to his potential people would have looked at Roberto differently
In 2017 he tried to correct it, and kept looking for younger player but with eye on Verratti as an immediate help for midfield. But Neymar departure hit us badly, we got immediate replacement in Dembele, along Paulinho, we got a new RB after struggling with Roberto.This winter we got Coutinho and Mina and completed the replacement of our older guys. Currently we have only 2 players born before 1987 (Vermaelen who has 1 year left in contract and has been solid) and Iniesta who has Carte blanche to stay or leave whenever he wants.
I think RF for now seem to have achieved what he wanted 18 months ago, he replaced Adriano/Alves/Mathieu/Mascherano/Bravo and got Iniesta replacement.
He took gamble with Valverde over other fan favorites like Sampaoli and player favorite (Unzue) and it seem to be paying off, took a risk with counting on Roberto as a starter last season which we payed for but on the other hand it seem paying off this year with Roberto doing very well as RB
Now, this on paper look solid, but there is also questions remained to be answered"
1-Is Dembele gonna be a worthy replacement fo Neymar?
2-Is Coutinho really Iniesta replacement?
If any of those guys failed this will really tarnish Fernandez career here, but if they played to their potential he will look like a very good sporting director
But time also fly by, and there is other older players who will need replacement, currently the core of the team are mostly 31-29 by start of next season
Pique/Messi/Suarez (1987) Rakitic/Paulinho/Busquets(1988) Alba/Cillessen/Vidal (1989)
Vidal and Paulinho are more or less replaceable squad players,Cillessen is a back up GK who can stay as he wants for the next half decade. Can argue that Messi/Busquets/Alba can stay starters for around 3 more seasons at least so might not want a replacement now. But it will leave us with Pique,Rakitic and Suarez who we might need to replace soon.
With rumors about agreement with Griezmann,Arthur and interest in De ligt it already seem that Roberto is preparing their replacements.