England flanker James Haskell admits there were times he feared his career might be over as he tried to regain fitness after a toe operation.
Wasps re-sign Zebre and Italy hooker Carlo Festuccia on a contract until the end of the season.
Defending champions Saracens will host Glasgow, while Wasps visit Leinster in the quarter-finals of the European Champions Cup.
Wasps score seven tries to defeat Zebre 41-27 in their final Champions Cup pool match and earn a quarter-final at Leinster.
Audio & Video
Near the halfway stage of the 2016-17 season, BBC Sport's Jeremy Guscott assesses the sides vying to be Premiership champions.
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