By Neil McLeman Following his sacking by Napoli on the eve of their last-16 Champions League tie, former Watford coach Walter Mazzarri said: “I was hoping to manage against Barcelona with Victor Osimhen on the pitch.” The Nigeria striker is set to return against the Catalan giants at the Stadio Diego Armando Maradona on Wednesday night. But Osimhen will soon be leaving Napoli as well with the only question being if the £110m-rated forward will go to the Premier League, Paris-Saint Germain or Saudi Arabia. Chelsea, Arsenal and Manchester United have all been linked with him while the French cha…