Chelsea’s transfer business is by no means complete as they get their pre-season tour of the United States underway. The 2-2 draw last night with Wrexham will seem an unconvincing result, however new manager Enzo Maresca will still have taken a number of positives from the display. While a plethora of first team stars and youngsters were given the opportunity to show what they can do, a number of players who were left off the tour look to have serious doubts over their futures. The highlight name on this list is Trevoh Chalobah, with supporters not pleased with the treatment of him as they loo…