Newcastle United are sweating on the fitness of Anthony Gordon ahead of Saturday afternoon’s game against Luton Town. The 22-year-old is a major doubt after being forced off during the Carabao Cup defeat to Chelsea. He was on the end of a terrible tackle from Moises Caicedo in just the second minute that incredibly did not result in a red card. It initially looked like he was going to be fine to carry on, but early in the second half he went down again and his game was over. Anthony Gordon became the latest Newcastle player to succumb to injury, and his absence would leave the Magpies very lig…