4. Chris Ashton (Harlequins)
It is understood that Ashton will stay at the Twickenham Stoop at least until the end of next season after joining from Sale, giving him a chance of nearing his goal of 100 Premiership tries. He currently boasts 86 after spells at Northampton Saints, Saracens and Sale. After that, he will reportedly head to Japan or France for one last payday.