Gregor Townsend is relishing the fresh challenge Saracens will pose his Glasgow side in the Champions Cup quarter-final.
Defending champions Saracens will host Glasgow, while Wasps visit Leinster in the quarter-finals of the European Champions Cup.
England captain Dylan Hartley is doing extra tackling practice to help prevent a recurrence of the red card that led to his current six-week ban.
Wasps score seven tries to defeat Zebre 41-27 in their final Champions Cup pool match and earn a quarter-final at Leinster.
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Listen to a BBC Radio 5 live special programme, which speaks to England coach Eddie Jones and top referee Wayne Barnes about the new rules.
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