#4. Gavin Henson (Saracens)
What can you say about this man that hasn’t already been said? Henson had not played professional Rugby for 18 months before joining Sarries in 2010 but was an exciting addition nevertheless with the 33-cap Wales international making his debut on boxing day.
After failing to break into the team regularly, Henson secured the release from his contract in February 2011 and joined Toulon shortly after.
A deal that offered so much, but delivered nothing.