We agree, that Firmino is a player who has skills that can still be relied on even though he is already 30+. we know very well, that the big salary was the trigger for a career in the Saudi Pro League. maybe that's why, he received a proposal and joined to play in the Saudi Pro League instead of being a reserve player in a European club.
but with Al-Ahli, Firmino needs a partner on the field so that he can perform as well as when he played at Liverpool. at a minimum, he needs teammates who know his style of play. maybe that's why, the club wanted Sadio Mane to join. at least, these two star players have worked together when defending Liverpool. Currently, Al-Ahli will be having intense discussions with Bayern in the coming days so that the reunion of Mane and Firmino can materialize. if Mane is willing to accept the offer, then these two players can become partners in Al Ahli's front line. even so, like it or not the club had to bring in several other newcomers as a complement to the squad. or perhaps, they need to have good enough local players for the team to be competitive to compete in the Saudi Pro League.
I think of course with the quality he has of course he doesn't want to be bench warmer if he wants to stay in Europe. So his decision to join Al-Ahli was a good decision for his next career. Therefore, I think the salary factor was also a big consideration in agreeing to accept Al-Ahli offer because he was reported to have received twice the salary he received when he was still at Liverpool.
I think the Salary sector is the main attraction for European players to join the team from Saudi Arabia. For Firmino, whose abilities and skills have been tested, it is possible that he will easily develop the abilities he has because the Saudi Arabian league is not as strict as the Premier League. Seeing as Al Ahli who entered the promotion team this season, of course their strength will be stronger after successfully bringing in Firmino and I think they have to bring in a few more players to be able to properly organize their game next season.