Jordan Henderson could well make a quick exit from Saudi Arabia and its football league, with a number of European clubs reportedly showing interest in signing the former Liverpool star. The 33-year-old Englishman is “exploring his options” with clubs including Ajax, Bayer Leverkusen, and Newcastle United, sports news outlets reported this week. The news follows reports last week that Henderson wanted to leave Saudi Arabia, less than six months after signing a lucrative three-year contract with Pro League side Al-Ettifaq. He has been struggling with the hot and humid playing conditions, and le…