Harry made his Rovers debut on 20 December 1978 in a Leinster Senior Cup quarter final win against Dunleary Celtic at Tolka Park.
He stalled in renewing his contract and although he had played quite well in a few pre-season friendlies he had kept McLaughlin waiting and that led to H losing his place to Anto Whelan.
Perhaps the shortest game of his entire career happened at Dalymount Park on 19 January 1986 when he was red carded after just 4 minutes after a brief altercation with Tom Conway (footballer).
On 3 June 1990 Harry had a testimonial luncheon in his honour which was attended by members of Ireland's UEFA Euro 1988 squad which included ex teammate Liam O'Brien.
His father in law is Hughie Gannon who won the FAI Cup with Rovers in 1955 and his younger brother Marc Kenny played for the Hoops in the late 90s.
Harry's first foray into management came with his local junior team, Kinvara Boys, who were then playing in the Athletic Union League Premier A Division.