Newcastle United could do with signing another striker on transfer deadline day, but they are not going to get one. The Magpies’ need for a forward comes after news that Alexander Isak could be out of action for a few weeks. He limped off before half time against Aston Villa on Tuesday night with a groin injury. His absence coincides with Callum Wilson also being out of action. It is hoped that he will be available for this weekend’s game against Luton Town, but the 31-year-old has refused to confirm whether or not he will be able to make his return. Newcastle could really do with having anoth…