ALEXANDER ISAK is NOT part of Newcastle’s squad to take on Celtic at Parkhead.The Magpies knocked back an approach from Liverpool this week for the Swedish striker.GettyAlexander Isak is not in Newcastle’s squad for the pre-season friendly vs Celtic[/caption]GettyIsak has been the subject of intense transfer speculation from Liverpool[/caption]Toon’s Saudi owners are backing boss Eddie Howe in his fight to keep the 25-year-old and refusing to sell.That’s despite SunSport learning that the Swedish star is interested to see what was on offer at Anfield in a potential £120million move.Isak is said to be disappointed by the Toon’s botched contract offer.Now they face further speculation over his future after he sat out today’s first official pre-season friendly against the Scottish champions.Brazilian star Joelinton, 28, was another notable absentee and Newcastle sources claim that the pair’s absence is due to their minutes being managed.MORE TO FOLLOW…THIS IS A DEVELOPING STORY..The Sun is your go to destination for the best football, boxing and MMA news, real-life stories, jaw-dropping pictures and must-see video.Like us on Facebook at https://www.facebook.com/TheSunFootball and follow us from our main Twitter account at @TheSunFootball.