Update from Bobby Bridge, now added to his article:
Contrary to reports elsewhere, Fifita isn't leaving his Wasps deal early, but at the end of what was a short-term deal.
"He is leaving at the end of his contract," confirmed Blackett. "We spoke, we tried to [get Fifita to stay], honestly, you look at the difference, we had a good long conversation, we've got a really good relationship. I've got nothing but respect for Vaea. We fully understand as a club why he has made the decision. No-one has got an issue in this club whatsoever why he has made that decision."
I guess the offer from Scarlets was just too good to turn down.