I don't want to intrude on people's fantasies, but the Flamini comparison is a fatuous one. Whilst Flamini was playing for AC Milan and making over 20 appearances, Momo was being released by PSG and failing to get a contract on trial at Reading. Flamini is still a good player and has come in at Arsenal off the back of a successful spell in Italy.
Don't get me wrong, I'm a big Momo fan, but people are looking for what was there rather than what is still there. Every season with Juventus produced hurdles and his influence there wound down, until he looked a shell of the player he once was. PSG seemed to offer him a new start, but he was unable to fit into the squad once the likes of Matuidi and Verratti were introduced. Again, he started promisingly there before being pretty much ignored.
He's a far cry from the player we had, even post injury unfortunately. Only 50 appearances in the last four seasons and his lack of a club now attest to that. It's one thing to want Masch or Xabi back, but Momo's time has expired as far as being a top-level pro has gone. It's a shame, but no one ever said football was without a cruelty.