2. Baba Rahman
Another Chelsea player making this list, the Augsburg defender was signed for a whopping £20 million but has rarely played for the Blues. Jose Mourinho might rate him as one of the best left-backs but Rahman does look out of pace in England.
Chelsea have spent a lot of money in the window and this has to be one of their biggest blunders, it isn’t that Rahman is a bad player, it is just that he probably wasn’t ready for this league or needs more game time, which he could get under Hiddink.