Middlesbrough still have work to do in the transfer market this summer. Boro will be looking to make at least one more addition to their first-team squad in the final week of the summer window. Middlesbrough have done some excellent work over the last couple of months with five senior players and one academy star added to their ranks. Michael Carrick has seen his first team strengthened by the arrivals of Luke Ayling, Delano Burgzorg, Aidan Morris, Micah Hamilton and Tommy Conway. Harley Hunt has also linked up with the U21s but has been included in several matchday squads by Carrick this term…