Might be right, although when you look at it we've had a lots of players get slated and are deemed to be the problem in our team when the one thing they all have in common is they've all played along side him, coincidence?
Decline is natural for older players (Barry, Rooney). If anything, Gana allowed them to extend their Everton careers.
Erratic form is natural for young players (Davies).
Schneiderlin is the only player who experienced an unexpected change in form. But we haven't managed to build a workable midfield around Schneiderlin, with or without Gana, at any point during the past two seasons so I'm not laying the blame for his form at Gana's feet.