 Complete the following phrase:  Walker left Chelsea at the end of the 198384 season following a contract dispute, and signed for Sunderland. He returned to haunt his old side the following season in the League Cup, when the teams were drawn together in the semi-finals. In the second leg at Stamford Bridge, Walker inspired Sunderland to a 32 win, giving them a 52 aggregate lead, which provoked a near-riot; at one point a Chelsea fan entered the pitch and chased Walker. In the 