Newcastle United are set to welcome a key player back from injury, and someone who could now be even better than before. Alexander Isak is fit again after his groin problem, and his return to fitness has coincided with Joe Willock getting over his Achilles issue. It has been an extremely frustrating season for the Newcastle United midfielder. He has been limited to just six appearances so far, during what was meant to be a great season for the 24-year-old. But Willock has been crippled with injury setbacks, forcing Eddie Howe to be without one of his most important players. However, the £25mil…