Arsenal's search for a world-class striker has suffered another setback after Galatasaray reportedly rejected an ambitious player-plus-cash offer for Nigerian star Victor Osimhen, Soccernet.ng reports. According to Turkish journalist Ömer Faruk Özcan, via Nexus Sports, senior Arsenal officials traveled to Istanbul in an attempt to convince the Turkish champions to sell their prized striker. Instead of making a straight cash bid, the Premier Leag…