If we can sign an big powerful overseas backrower and release Griffin then I'd sign Longstaff, he would be in first 17, but in the fringe squad until he improves his strength in attack and defence.
I'd rather sign Julian from Catalans as think we need to improve our 17 rather than invest in long term projects (when we have a few already), but could take Longstaff as a squad player if we recruit an overseas backrower. My fear is that Longstaff is seen as Ma'u replacemnet and I don't think he is the right type of player we need and isn't ready to play in our best 17 of we want to progress.