The Irish province has won European club rugby’s top trophy four times, the most recent coming in 2018.
They have lost three finals since then, including defeats to La Rochelle and Saracens in 2019, but will aim to break their losing streak in showpiece deciders when they face Toulouse on Saturday at the Tottenham Hotspur Stadium.
“We’re always doing things slightly differently, you need to keep evolving,” he stated after a rotated Leinster side lost to Ulster in the United Rugby Championship (URC) last weekend.
Cullen owns Springbok World.