I do not think that PSG will be all that bad just because they are losing Messi, he wasn't the only person that made them good and won't be the reason why they may become bad. First of all, they barely won the title anyway, and they lost UCL as well, so it wasn't some epic season for them neither, and that's why I wouldn't say that it matters all that much. Secondly, I feel like we should be focusing on who they are going to get, if they get someone better than they will be fine. They still have 24 year old Mbappe, Marquinhos, Hakimi, Mendes, Donnaruma, Kimpembe. '
These are all great players they can win UCL with, and they just need to find players for other positions instead. Neymar is still there officially but I am expecting him to leave as well, that should be easy enough to see.
First season with PSG, Lionel Messi have played 26 games with 6 goals and contributed 16 assists in Ligue 1 then his appearance in Champion League played 7 games and scoring 5 goals. But Lionel Messi has good performance on second season with PSG from 32 games in Ligue 1 success scoring 16 goals and has 16 assists.
But losing Messi is not over for PSG because since two season Lionel Messi joined PSG he can't bring great achievement in Champion League, without Messi, PSG won Ligue 1 and French Cup and signing Messi they want Champion League tittle but failed. Lionel Messi have leave PSG and Asensio is the first signing in this season for replacing Messi position, lets see how consistent or better performance from PSG next season in Champion League.