Newcastle United are playing a dangerous game in this summer’s transfer window as they work into the final hours of the market. Eddie Howe is less than 48 hours away from ending the summer on the back of a seriously underwhelming transfer window. The Toon have seen a few players arrive on Tyneside so far this summer but the standout addition has been Lloyd Kelly on a free. Clearly, there is one player who Newcastle want to sign before the deadline on Friday evening. Newcastle have made multiple bids for Crystal Palace’s Marc Guehi but are yet to see a real breakthrough in negotiations. The clo…