Thing about Gana to PSG is that Silva wants to play a passing game out of the back and through midfield but he doesn't have the passers in his team to do that. So we have to face up to losing possession regularly because Gylfi and Gomes are not quick and not always on target with passes. The wide players we have can supply moments of genius but also lose the ball as flicks and dribbles don't always come off. Which is where Gana comes in as we regularly have to win the ball back in midfield or out wide. He is great at that! not much good at anything else but great at that. Should we sell him without a like for like replacement we will have to change tactics to more hoofball or we will put the defence under greater pressure a la second season Koeman.
Controversial statement but I think players that fit the Silva system at Everton are few and far between. Gana is one of them, as is Walcott, Richarlison, DCL, Gomes (on form), Lookman, Bernard, Digne, Zouma. you can't make a team out of them, so there are fillers - players not playing to their strengths - which is why we are so inconsistent.