The San Francisco 49ers formally placed Jarryd Hayne on the Reserve/Retired List on Monday. They retain his rights if he ever returns to the NFL, but in the meantime, they do not have to pay him, and it opens up a spot on the 90-man roster.
I've posted the full roster below, which now sits at 89 players. The team starts OTAs on Tuesday. In the past they have added players after the offseason program and before training camp, so there is no real rush. The team added an inside linebacker last week, when they signed UDFA Wynton McManis.