Harris was hoping to make an impact under new manager Colin Calderwood. Harris's old club Millwall made a loan deal for him on a six-month deal in August 2006, however Harris rejected the offer saying if he were to move it would have to be on a permanent basis, and with Darren Byfield and Ben May set to return from injury for Millwall, Harris believed he would have once again been forced out the side, which was the reason he left The Den in the first instance. Millwall therefore, withdrew from transfer negotiations.