Paul Mitchell has a lot of critics he has to prove wrong when the January transfer window comes around. Newcastle United’s new sporting director has not exactly hit the ground running in Tyneside after replacing Dan Ashworth. The Magpies failed to land any of their top transfer targets over the summer after leaving it late to bring in a top-class centre-back and right-sided winger. Newcastle submitted multiple bids for Marc Guehi but failed to land the defender with Crystal Palace increasing their asking price towards the end of the window. Mitchell also launched a desperate attempt to sign No…