#5.Gareth Delve

Wales international Gareth Delve left the Ospreys a year early in 2016 after getting just 56 minutes of game-time in the campaign.

The 33-year-old back-rower, who had captained Melbourne Rebels in Super Rugby and Gloucester in the Aviva Premiership, seemed to be an astute capture when he signed a two-year contract to return home from Japanese club NEC Green Rockets.

But the 11-times capped forward failed to make an impression, making this a move to regret.