Newcastle United’s injury crisis shows no sign of letting up. Indeed, just as Harvey Barnes made his long-awaited return to action, Newcastle were dealt another big blow during the 4-4 draw with Luton on Saturday. Not only was dropping two points in a game they really should be winning disappointing but Eddie Howe saw another key player suffer an injury. Days after Alexander Isak was forced off against Aston Villa, Anthony Gordon left St James’ Park on crutches after being replaced by Callum Wilson at half-time. As you might imagine, Howe couldn’t believe what he was seeing. Newcastle injury n…