Return to Roman jurisdiction. Re-affirm the Catholic faith and denounce the articles that differentiated the Anglicans from the Catholics.
And since they've generally cocked-up the ordination process, all of the priests woudl need to be at least conditionally ordained. This would exclude women, of course.
SD
Acknowledge the primacy of the Bishop of Rome, plus a few other minor doctrinal matters.
It seems to me that it would be impossible for the Anglican church to rejoin the Roman Catholic church, because at that point it would cease to exist. I think it would rather have to be a process of everybody in the Anglican Church going through the Rite of Christian Election and being recieved into the Roman Catholic Church on an individual basis. I imagine clergy could do the same, and then be re-ordained, or not, as the Roman Catholic Church saw fit.