Stan Collymore believes that Merseyside club Everton should have tried to sign veteran forward Zlatan Ibrahimovic while the big Swede was still available on a free transfer. During the summer, Everton lost their main-man and top-scorer Romelu Lukaku to Manchester United for a fee of around £75 million and they have worryingly failed to replace the big Belgian with adequate quality. Such as failure has proven to be costly for…