Depends which bone in his thumb Nikotemo has broken, if its his scaphoid then its a slow process 8 plus weeks. Any other bone, depending on the nature of the break should be quicker to heal.
Cam Scott`s injury at Hull was a lower leg muscle tear I think, so I suppose on the bright side a Hamstring is not a reoccurrence of an old injury. Depends on the Grade of tear, with Powell suggesting 8 weeks then it will be a Grade B.
Would be interesting to know what injury Atoni and Vagana are recovering from, Atoni has been very durable Vagana much less so.