What are you talking about? Mac Allister could possible replace Gundo (possibly) but you then think Championship loanee McAtee and Perrone, who is already in the squad but not good enough to get minutes, "should be okay" to replace one of the best midfielders in the world Bernardo Silva? I think it would be insane to assume two players who are currently not even good enough to play in PL can replace one of the best players in the league. If Bernardo leaves, we need to replace him with at least an elite level player, preferably a world class player.